Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
kinh vi » dinh vi, kinh ve, kenh vi
ky sang » ky nang, ky dang, duy sang
ky tang » ky nang, ky dang, kho tang
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
va kinh » va tinh, qua kinh
cua tu » cua tuc, cua su, cua cu
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va

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) or (ky tang)) lap hai. hieu ve cau luc va kinh vi ((cua tu) or (qua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky sang) OR (ky tang)) lap hai. hieu ve cau luc va kinh vi ((cua tu) OR (qua su)).
• Adding a wildcard symbol may retrieve word variants: so sach ((ky sang) or (ky tang)) lap hai. hieu ve cau luc va kinh vi ((cua tu) or (qua su))*.