Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
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
tac tang » tac vang, tuc tang, tay tang
tang ban » tang bang, tiang ban, tang van

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