Perhaps you should try some spelling variations:
dang lap » dan lap, dung lap, sang lap
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
hieu ve » hieu van
lap hai » lap tai, lap lai, lap hoat
ky dang » ky nang, ky danh
luc va » duc va, tuc va, loc va
cua cu » cua chu, cua cau, cua co
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dang lap hai. ((hieu ve) or (hieu va)) cam luc va danh vi ((cua cu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang lap hai. ((hieu ve) OR (hieu va)) cam luc va danh vi ((cua cu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: so sach ky dang lap hai. ((hieu ve) or (hieu va)) cam luc va danh vi ((cua cu) or (cua su))*.