Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
ty nang » ky nang, ly nang, ty nong
ty hang » ly hang, thi hang, thu hang
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
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) OR (ty xang))) or (ty hang)) x hoi. hieu va cac tuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((ty nang) OR (ty xang))) OR (ty hang)) x hoi. hieu va cac tuc va hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((((ty nang) OR (ty xang))) or (ty hang)) x hoi. hieu va cac tuc va hanh dai cua tre*".