Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » hieu qua
cac tuc » cac toc, cac tu, cac tac
chua te » chua tu, chua xe, chuan ted
tuc ca » tuc cac, tuc cua, tuc xa
dao va » dao van, tao va, do va
cua te » cua tu
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: te sach ky nang x hoi. ((hieu va) or (lieu va)) cac tuc ca dao va ((chua te) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. ((hieu va) OR (lieu va)) cac tuc ca dao va ((chua te) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. ((hieu va) or (lieu va)) cac tuc ca dao va ((chua te) OR (cua te))*".