Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh tang » hanh trang, hanh mang, hanh tung
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac ran » tac can, tac van, tac quan
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chu)) xanh - ((hanh tang) or (anh tang)) cua thong cong tac ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chu)) xanh - ((hanh tang) OR (anh tang)) cua thong cong tac ran cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) xanh - ((hanh tang) or (anh tang)) cua thong cong tac ran cau*.