Perhaps you should try some spelling variations:
chiet tach » chieu sach
tang luan » dung luan
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
chu xanh » chu manh, chieu xanh, chua xang
anh tang » anh bang, anh dang, anh nang
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 xanh) or (chiet tach)) - anh tang luan ((hang cong) OR (dang cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chiet tach)) - anh tang luan ((hang cong) OR (dang cong)) tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chiet tach)) - anh tang luan ((hang cong) OR (dang cong)) tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chiet tach)) - anh tang luan ((hang cong) OR (dang cong)) tan toan cao*.