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