Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, phong chong
hanh tranh » canh tranh, hanh trinh, hanh trang
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh tranh cua ((thong cong) or (thong thong)) ((dan than) OR (dan chan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh tranh cua ((thong cong) OR (thong thong)) ((dan than) OR (dan chan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - hanh tranh cua ((thong cong) or (thong thong)) ((dan than) OR (dan chan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh tranh cua ((thong cong) or (thong thong)) ((dan than) OR (dan chan)) tap*.