Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
toc hieu » toc thieu, doc hieu, hoc thieu
tranh va » tranh van, trang va, trinh va
van tuan » van quan, van ban, anh tuan
tuan tap » toan tap, tuan tai, tuyen tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - canh tranh va ((nhung cong) or (((dang cong) OR (dung cong)))) van tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh tranh va ((nhung cong) OR (((dang cong) OR (dung cong)))) van tuan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc hieu manh - canh tranh va ((nhung cong) or (((dang cong) OR (dung cong)))) van tuan tap".
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - canh tranh va ((nhung cong) or (((dang cong) OR (dung cong)))) van tuan tap*.