Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » thong cong, hang cong, nhung don
tranh cua » doanh cua, manh cua
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
tan chan » dan chan, ban chan, can chan
chan dau » phan dau, han dau, chan doan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chieu)) tinh - canh tranh cua ((nhung cong) OR (dung cong)) tan chan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) tinh - canh tranh cua ((nhung cong) OR (dung cong)) tan chan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) tinh - canh tranh cua ((nhung cong) OR (dung cong)) tan chan dau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) tinh - canh tranh cua ((nhung cong) OR (dung cong)) tan chan dau*.