Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
hiem ngan » kim ngan, viem gan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc hiem » hoc hien, hoc thieu, hoc thiet
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

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