Perhaps you should try some spelling variations:
te sach » toc sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
dan dai » dat dai, can dai, dan dat
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
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) or (ty hang)) x hoi. hieu va cac tuc va dan dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty hang)) x hoi. hieu va cac tuc va dan dai cua tre*.