Perhaps you should try some spelling variations:
tkhach sang » khach hang
thong cong » trong cong, tong cong, thong thong
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
khach san » khach hang, thanh san
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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