Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hoc tieng » hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
hoc tien » hoc hien, hoc vien, hoc tren
san chay » san pham, van chat, dan chan
chay cau » chay cao, chay chua, cay ca

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc tien) OR (hoc tieng)) manh - canh tranh cua ((nhung cong) OR (dung cong)) san chay cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc tien) OR (hoc tieng)) manh - canh tranh cua ((nhung cong) or (dung cong)) san chay cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc tien) OR (hoc tieng)) manh - canh tranh cua ((nhung cong) or (dung cong)) san chay cau*.