Perhaps you should try some spelling variations:
cua triet » su triet, va triet
khach san » khach hang, thanh san
vu khach » vu khanh, vu khac, vay khach
cua viet » ca viet, hoa viet, cua vat
san tang » san sang, son tang, fan tang
cac loc » cac lop, cac toc, cac hoc
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, me hoi
ve cac » va cac, vien cac
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach san tang ((ma hoi) or (ma hoa)). hieu ve cac loc va hanh vi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach san tang ((ma hoi) OR (ma hoa)). hieu ve cac loc va hanh vi ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: vu khach san tang ((ma hoi) or (ma hoa)). hieu ve cac loc va hanh vi ((cua triet) or (cua viet))*.