Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » canh tranh, hanh chinh
hoc chieu » ho chieu, hoc dieu, hoc thiet
hoc thieu » toc thieu
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
cong san » cong tac
san van » tan van, luan van, tran van

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

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