Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
dung cong » dung trong
anh tang » anh bang, anh dang, anh sang
anh nang » ganh nang, anh bang, anh dang
qua dung » quang dung, su dung, qua song
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: theo ((chieu xanh) OR (chieu sang)) - ((anh tang) or (anh nang)) qua dung cong thanh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - ((anh tang) OR (anh nang)) qua dung cong thanh toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sang)) - ((anh tang) or (anh nang)) qua dung cong thanh toan cao*".