Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tran trong » gian trong, quan trong, tran hong
tran hoang » tran hong, quan hoang, tran quang
anh quang » anh xquang, anh quan, nhanh quang
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: mot chieu sach - anh quang ((tran trong) or (tran hoang)) cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot chieu sach - anh quang ((tran trong) OR (tran hoang)) cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: mot chieu sach - anh quang ((tran trong) or (tran hoang)) cong tap toan cao*.