Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, hanh dung
thanh hung » thanh huong, thanh tung, thanh trung
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
nhung van » phung van, nhung bai, nhung cau
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((thanh dung) or (thanh hung)) va ((nhung van) or (thong cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((thanh dung) OR (thanh hung)) va ((nhung van) OR (thong cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((thanh dung) or (thanh hung)) va ((nhung van) or (thong cong)) dan toan cao*.