Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
trung hon » trung hoc, trung hoa, trung uong
trung son » truong son, trung uong, trung hoc
hang cong » dang cong, hang nong, bang cong
toan cao » toan ban, toan tap

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) or (doi chieu)) xanh - thanh ((trung hon) OR (trung son)) hang cong thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) xanh - thanh ((trung hon) OR (trung son)) hang cong thanh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chieu)) xanh - thanh ((trung hon) OR (trung son)) hang cong thanh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - thanh ((trung hon) OR (trung son)) hang cong thanh toan cao*.