Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
suat trong » suat thong, luat trong, thuat trong
thien anh » thien danh, tien anh, thien thanh
hanh nang » anh nang, ganh nang, hanh mang
cong tac » cong ty
tac han » tac nhan, tac ha, tac can
han tap » han tai, toan tap, nhan tai

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 anh)) - hanh nang suat trong cong tac han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - hanh nang suat trong cong tac han tap*.