Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
lap hai » lap lai, lap hoat, lanh hai
danh vi » hanh vi, dinh vi, danh di
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam
loc va » hoc va, luc va
y dang » ky dang, 2 dang, _ dang
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 y dang ((lap hai) or (lap tai)). hieu ve 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 y dang ((lap hai) OR (lap tai)). hieu ve cam ((loc va) OR (tuc xa)) danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach y dang ((lap hai) or (lap tai)). hieu ve cam ((loc va) or (tuc xa)) danh vi cua te*.