Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
chieu sach » chinh sach, chieu sang, chieu xanh
thanh hung » thanh huong, thanh tung, thanh trung
anh quang » anh xquang, anh quan, nhanh quang
hung cong » nhung cong, hung cuong, phung cong
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: doi ((chieu sach) OR (chiet tach)) - anh quang thanh hung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - anh quang thanh hung cong tac toan cau*".