Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
sang lap » sang tao, sang ma, sang tai
so sach » so sanh, bo sach, co sach
danh vi » hanh vi, dinh vi, danh di
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
hieu ve » hieu va
loc va » hoc va, luc va
vi cua » vai cua, di cua
cua te » cua tu

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 tai. ((hieu ve) or (hieu van)) cam ((loc va) or (tuc xa)) danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang lap tai. ((hieu ve) OR (hieu van)) cam ((loc va) OR (tuc xa)) danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky sang lap tai. ((hieu ve) or (hieu van)) cam ((loc va) or (tuc xa)) danh vi cua te*.