Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
dang cong » dung cong
tan thanh » tran thanh, tang thanh, toan thanh
thanh cau » thanh chau, thanh mau, nhanh cau
trang va » hang va
tran van » luan van
cong tan » cong tac, cong san, cong thanh

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

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