Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu xanh » chieu xanh, hieu manh, thien anh
canh manh » lanh manh, canh tranh, cach mang
cua dang » cua cong, cua ban
cua dong » chua dong, cua cong, cua nong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (thien thanh)) - canh manh ((cua dang) or (cua dong)) cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien thanh)) - canh manh ((cua dang) OR (cua dong)) cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien thanh)) - canh manh ((cua dang) or (cua dong)) cong tan van ban*.