Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
vai cua » hai cua, lai cua, bai cua
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
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 ty nang x hoi. hieu va cam ((duc va) or (tuc va)) hanh ((vai cua) OR (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu va cam ((duc va) OR (tuc va)) hanh ((vai cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu va cam ((duc va) or (tuc va)) hanh ((vai cua) OR (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu va cam ((duc va) or (tuc va)) hanh ((vai cua) OR (dai cua)) te*.