Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
cac tac » cac bac, cac dac, cac tai
sach ty » sach y, sach tu, sach thu
cac toc » cac toi, cac nuoc, cac thoi
ty nang » ky nang, ty xang, ty hang
x hoi » xa hoi, o hoi, x ho
te va » tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ty nang x hoi. hieu viec ((cac tac) OR (cac toc)) va thanh ((te va) or (ke va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty nang x hoi. hieu viec ((cac tac) OR (cac toc)) va thanh ((te va) OR (ke va)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ty nang x hoi. hieu viec ((cac tac) OR (cac toc)) va thanh ((te va) or (ke va)) triet".
• Adding a wildcard symbol may retrieve word variants: hoc sach ty nang x hoi. hieu viec ((cac tac) OR (cac toc)) va thanh ((te va) or (ke va)) triet*.