Perhaps you should try some spelling variations:
nhiet tach » chiet tach
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hoc nhiet » hoc thiet, hoc nghien, hoc hien
tranh va » tranh van, trang va, trinh va
dan than » dan chan, ban than, van than
van tuan » van quan, van ban, anh tuan
van tai » von tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhiet tach - hanh tranh va nhung cong ((((van tai) or (dan than))) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tach - hanh tranh va nhung cong ((((van tai) OR (dan than))) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - hanh tranh va nhung cong ((((van tai) or (dan than))) or (van tuan)) cau*.