Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
quang tran » quang tuan, quang trung, quang thanh
hung cuong » hung vuong, hung luong, quang cuong
hong cuong » hong vuong, thong chuong, phong chong
anh quang » anh xquang, anh quan, nhanh quang
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 (chieu sang)) - anh quang tran ((hung cuong) OR (hong cuong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - anh quang tran ((hung cuong) OR (hong cuong)) tac toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu sang)) - anh quang tran ((hung cuong) OR (hong cuong)) tac toan cau*".