Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
dinh vi » dinh ve, dinh viet, dinh tri
ky sang » ky nang, ky dang, ky tang
lap hai » lap tai, lap lai, lap hoat
van cam » van nam, van lam, van cau
cam luc » cam xuc, cau luc
sach ky » sac ky, sach y, sach ty
danh vi » hanh vi, danh di, danh va
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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 sang lap hai. hieu van cam luc va ((danh vi) or (dinh vi)) ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang lap hai. hieu van cam luc va ((danh vi) OR (dinh vi)) ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky sang lap hai. hieu van cam luc va ((danh vi) or (dinh vi)) ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: so sach ky sang lap hai. hieu van cam luc va ((danh vi) or (dinh vi)) ((cua te) OR (cua tu))*.