Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
nang cong » nang song, dang cong, bang cong
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap
va nang » van nang, da nang, cam nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) OR (chieu sach)) - hanh trung va nang cong tan ((tran cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - hanh trung va nang cong tan ((tran cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - hanh trung va nang cong tan ((tran cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - hanh trung va nang cong tan ((tran cau) or (toan cau))*.