Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
dung cong » dung trong
hoc tien » hoc tieng, hoc vien, hoc tren
tranh va » tranh van, trang va, trinh va
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc tien) OR (hoc hien)) anh - canh tranh va dung cong thanh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc tien) OR (hoc hien)) anh - canh tranh va dung cong thanh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc tien) OR (hoc hien)) anh - canh tranh va dung cong thanh toan cao*.