Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » thong cong, hang cong, nhung don
hiem ngan » viem gan
tranh cua » doanh cua, manh cua
dung cong » dung trong
kim ngan » kim ngoc
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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) or (kim ngan)) - hanh tranh cua ((nhung cong) OR (dung cong)) van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hiem ngan) OR (kim ngan)) - hanh tranh cua ((nhung cong) OR (dung cong)) van tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hiem ngan) or (kim ngan)) - hanh tranh cua ((nhung cong) OR (dung cong)) van tuan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hiem ngan) or (kim ngan)) - hanh tranh cua ((nhung cong) OR (dung cong)) van tuan cao*.