Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
vu sach » su sach, vu khach
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 tuc » cac toc, cac tu, cac tac
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
bach » cach, bac

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 (vu bach)) ly nang xa hoi. thien van cac tuc va hanh vi ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ly nang xa hoi. thien van cac tuc va hanh vi ((cua triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) ly nang xa hoi. thien van cac tuc va hanh vi ((cua triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu bach)) ly nang xa hoi. thien van cac tuc va hanh vi ((cua triet) or (cuu tre))*.