Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
bach tuoc » sach duoc, sach nuoc
hanh dai » hanh tai, hanh dao, vanh dai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve bach » ve cach, vu bach, vi bach
tuoc va » thuoc va, nuoc va, duoc va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ve bach tuoc va hanh dai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ve bach tuoc va hanh dai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ve bach tuoc va hanh dai ((cua tre) or (cua triet))*.