Perhaps you should try some spelling variations:
sach ky » sac ky, sach ty, sach kem
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
luu tre » luu tru, cuu tre, luy tre
xuc va » duc va, tuc va, luc va
vi luu » vi lua

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 ky) or (sach y)) nang cao hoi. hieu va cac xuc va hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang cao hoi. hieu va cac xuc va hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach y)) nang cao hoi. hieu va cac xuc va hanh vi luu tre*.