Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
hanh dung » thanh dung, anh dung, hanh dong
dung suat » ung suat, dung luat, dung quat
van thanh » ban thanh, van tuan
doc hieu » toc thieu, hoc thieu, hoc hien
van than » van thang, van tuan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh dung suat thong cong ((van than) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh dung suat thong cong ((van than) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh dung suat thong cong ((van than) or (van thanh)) cau*.