Perhaps you should try some spelling variations:
chiet tach » chieu sach
tang luan » dung luan
chu xanh » chu manh, chieu xanh, chua xang
anh tang » anh bang, anh dang, anh nang
luan han » luan hoan, luan phan, luan van
han cong » phan cong, hang cong, hanh cong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
toan tap » toan ban

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 han cong tan ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chiet tach)) - anh tang luan han cong tan ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) or (chiet tach)) - anh tang luan han cong tan ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chiet tach)) - anh tang luan han cong tan ((toan cao) OR (toan tap))*.