Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
doi chau » doi chieu, gioi chau, hoi chu
ban khan » ban than, ban nhan, ban chan
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chau) or (doi khi)) tinh - hanh tranh cua ((nhung cong) OR (thong cong)) ban khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chau) OR (doi khi)) tinh - hanh tranh cua ((nhung cong) OR (thong cong)) ban khan ap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chau) or (doi khi)) tinh - hanh tranh cua ((nhung cong) OR (thong cong)) ban khan ap".
• Adding a wildcard symbol may retrieve word variants: ((doi chau) or (doi khi)) tinh - hanh tranh cua ((nhung cong) OR (thong cong)) ban khan ap*.