Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
va thong » va thuong, va phuong, he thong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - ((hanh trinh) or (thanh tung)) va thong cong ((dan than) OR (dan chan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh trinh) OR (thanh tung)) va thong cong ((dan than) OR (dan chan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((hanh trinh) or (thanh tung)) va thong cong ((dan than) OR (dan chan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh trinh) or (thanh tung)) va thong cong ((dan than) OR (dan chan)) cao*.