Perhaps you should try some spelling variations:
thien chien » thien nhien
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan cua » than cua, tang cua, toan cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (thien chien)) xanh - canh tranh cua nhung cong van tan cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (thien chien)) xanh - canh tranh cua nhung cong van tan cua.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (thien chien)) xanh - canh tranh cua nhung cong van tan cua*.