Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
anh xquang » anh quan, anh xuan
anh quang » anh quan, nhanh quang, tinh quang
luan hung » luan chung, lan hung, luan ung
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 (chieu sang)) - ((anh quang) OR (anh xquang)) luan hung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - ((anh quang) OR (anh xquang)) luan hung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu sang)) - ((anh quang) OR (anh xquang)) luan hung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - ((anh quang) OR (anh xquang)) luan hung cong tac toan cau*.