Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
ve thong » he thong, va thong, ve chong
ve phong » va phong, van phong, mo phong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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 xanh - hanh trinh ((ve thong) or (ve phong)) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh ((ve thong) OR (ve phong)) cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh ((ve thong) or (ve phong)) cong san toan ban*.