Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khach ky » hanh ky, thanh ky
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, hieu ve
vu khach » vu khanh, vu khac, vay khach
lang van » dang van, tang van, hoang van
lang xa » lang ha, dang xay
vi cua » vai cua, di cua

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 ky ((lang xa) or (lang van)) hoi. ((hieu van) or (lieu va)) nam thuc dan hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky ((lang xa) OR (lang van)) hoi. ((hieu van) OR (lieu va)) nam thuc dan hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: vu khach ky ((lang xa) or (lang van)) hoi. ((hieu van) or (lieu va)) nam thuc dan hanh vi cua triet*.