Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cac toc » cac toi, cac nuoc, cac thoi
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
toc va » hoc va, toc ta, tuc 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 sach ly nang xa hoi. thien van cac toc va hanh vi ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang xa hoi. thien van cac toc va hanh vi ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu sach ly nang xa hoi. thien van cac toc va hanh vi ((cua triet) or (cuu tre))*.