Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, cong san, song van
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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