Perhaps you should try some spelling variations:
doan thanh » tran thanh (Expand Search), phan thanh (Expand Search), van thanh (Expand Search)
coil clamp » cell clamp (Expand Search), tail clamp (Expand Search)
et compte » et comptes (Expand Search), en compte (Expand Search), le compte (Expand Search)
thanh ngo » thanh ngoc (Expand Search), thang ngo (Expand Search), khanh ngoc (Expand Search)
dan non » than non (Expand Search), dan ning (Expand Search)
clamp a » clamp _ (Expand Search), clamp j (Expand Search)
sy doan » y doan (Expand Search), mya doan (Expand Search), son doan (Expand Search)
et com » et comb (Expand Search), et comp (Expand Search), et col (Expand Search)
j coil » j coal (Expand Search), j cogill (Expand Search), j conill (Expand Search)
a non » _ non (Expand Search)
j sy » j y (Expand Search), j st (Expand Search), j su (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( j ((et compte) OR (et com)) dan non ) OR ((( j coil clamp a non ) OR ( j sy doan thanh ngo ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j ((et compte) or (et com)) dan non ) or ((( j coil clamp a non ) or ( j sy doan thanh ngo ))))*.