Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
quang tran » quang tuan, quang trung, quang thanh
hung cuong » hung vuong, hong cuong, hung luong
hieu lang » chieu sang, hieu quang, nhieu tang
anh quang » anh xquang, anh quan, nhanh quang
tran hung » tran hong, tran quang, tran hoang
hach toan » thanh toan, manh toan
tac toan » tap toan, tam toan, tich toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (hieu lang)) - anh quang tran hung cuong ((tac toan) or (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (hieu lang)) - anh quang tran hung cuong ((tac toan) OR (hach toan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (hieu lang)) - anh quang tran hung cuong ((tac toan) or (hach toan)) cau*.