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, manh dung
hanh dong » anh dong, ha dong
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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) OR (hanh dong)) cua ((hang cong) or (thong cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh dung) OR (hanh dong)) cua ((hang cong) OR (thong cong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - ((hanh dung) OR (hanh dong)) cua ((hang cong) or (thong cong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh dung) OR (hanh dong)) cua ((hang cong) or (thong cong)) dan than cau*.