Perhaps you should try some spelling variations:
ve triet » va trien, su triet
vu sach » vu bach, su sach, vu khach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi ve » va ve, gi ve, ve ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (co sach)) ty ((nang xa) or (nang cao)) hoi. hieu va cam xuc va hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (co sach)) ty ((nang xa) OR (nang cao)) hoi. hieu va cam xuc va hanh vi ve triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (co sach)) ty ((nang xa) or (nang cao)) hoi. hieu va cam xuc va hanh vi ve triet*.