Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tran hoang » tran hong, quan hoang, tran quang
hieu lang » chieu sang, hieu quang, nhieu tang
anh quang » anh xquang, anh quan, nhanh quang
tran hung » tran hong, tran quang, tran huu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ho ((chieu sach) or (hieu lang)) - anh quang ((tran hung) or (tran hoang)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu lang)) - anh quang ((tran hung) OR (tran hoang)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu lang)) - anh quang ((tran hung) or (tran hoang)) cong tac toan cau*.