Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hanh tang » hanh trang, hanh mang, hanh tung
chao chu » cua chu, cao cho, chao xu
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
cho chu » cho thue

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: ((cho chu) OR (chao chu)) xanh - ((hanh tang) OR (anh tang)) va thuong cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((cho chu) or (chao chu)) xanh - ((hanh tang) OR (anh tang)) va thuong cong tac toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((cho chu) or (chao chu)) xanh - ((hanh tang) OR (anh tang)) va thuong cong tac toan cau*.