Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
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
cac duc » cac du, cao duc, cac nuoc
cac dac » cac dai, cac bac, cac tac
va hanh » van hanh, va thanh, va danh
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
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 ((cac duc) or (((cac dac) OR (cac dan)))) va hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu va ((cac duc) OR (((cac dac) OR (cac dan)))) va hanh dai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu va ((cac duc) or (((cac dac) OR (cac dan)))) va hanh dai cuu tre*".