Perhaps you should try some spelling variations:
su sach » so sach, vu sach
bo sach » co sach, hoc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
ve coc » ve cuoc, ve cac, ve co
luc va » tuc va, loc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (bo sach)) ky lang xa hoi. hieu ve coc ((luc va) or (duc va)) tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (bo sach)) ky lang xa hoi. hieu ve coc ((luc va) OR (duc va)) tinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (bo sach)) ky lang xa hoi. hieu ve coc ((luc va) or (duc va)) tinh vi cua tre*.