Perhaps you should try some spelling variations:
cua triet » su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu ve cau luc va thanh vi ((cua tre) or (((cua triet) or (cua viet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ve cau luc va thanh vi ((cua tre) OR (((cua triet) OR (cua viet)))).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ve cau luc va thanh vi ((cua tre) or (((cua triet) or (cua viet))))*.