Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
va thong » va thuong, va phuong, he thong
cong tac » cong ty
tan ban » toan ban, tang ban, can ban

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 - ((canh tranh) or (thanh trung)) va thong cong tac ((tan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh tranh) OR (thanh trung)) va thong cong tac ((tan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh tranh) or (thanh trung)) va thong cong tac ((tan ban) or (van ban))*.