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
hoc thieu » toc thieu
tranh cua » doanh cua, manh cua
van tan » van tuan, van ban, van tai
tan ca » tan cua, tang ca, dan ca

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

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