Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
cham tuc » nham thuc, pham thuc, tham thuc
vu khach » vu khanh, vu khac, vay khach
nang xa » nang x, nang ma, mang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
so sach » so sanh, bo sach, co sach
tuc van » thuc van, truc van, tuc va
lang xa » lang ha, dang xay, lang van
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) or (so sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (so sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc van hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) or (so sach)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc van hanh vi cua triet*".