Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
doi chieu » doc hieu, doi chi, mot chieu
hanh tang » hanh trang, hanh mang, hanh tung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
toan ban » van ban

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 (doi chieu)) xanh - ((hanh tang) or (anh tang)) cua dung cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - ((hanh tang) OR (anh tang)) cua dung cong thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) xanh - ((hanh tang) or (anh tang)) cua dung cong thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) xanh - ((hanh tang) or (anh tang)) cua dung cong thanh toan ban*.