Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
dung cong » dung trong
chu sach » thu sach, chieu sach, chuc hach
cau sach » cao sach, hau sach, rau sach
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo ((chu sach) OR (cau sach)) - ((anh tang) or (nhanh quang)) quang dung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sach) OR (cau sach)) - ((anh tang) OR (nhanh quang)) quang dung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sach) OR (cau sach)) - ((anh tang) or (nhanh quang)) quang dung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sach) OR (cau sach)) - ((anh tang) or (nhanh quang)) quang dung cong tan toan cao*.