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