Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
toan cao » toan tap
toan ban » van ban

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 (hoc thieu)) xanh - hanh tranh cua dung cong van ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - hanh tranh cua dung cong van ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - hanh tranh cua dung cong van ((toan cao) or (toan ban))*.