Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
ho chieu » hoc thieu, doi chieu, mot chieu
tranh va » tranh van, trang va, trinh va
cong van » cong vang, cong san, song van
nhan tai » hang tai, van tai, toan tai
han tap » han tai, toan tap, nhan tao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sang - canh tranh va nhung cong van ((han tap) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sang - canh tranh va nhung cong van ((han tap) OR (nhan tai))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sang - canh tranh va nhung cong van ((han tap) OR (nhan tai))*.