Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
chat xuc » chat huu, cam xuc, chao xu
dai cuu » dai cua, dai huu
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, sach thu
hieu va » lieu va
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
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) or (sac ky)) nang x hoi. ((hieu va) OR (hieu qua)) chat xuc va hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sac ky)) nang x hoi. ((hieu va) OR (hieu qua)) chat xuc va hanh dai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sac ky)) nang x hoi. ((hieu va) OR (hieu qua)) chat xuc va hanh dai cuu tre*".