Perhaps you should try some spelling variations:
trinh ve » trinh he, trinh va, trinh vi
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, van chat
van cac » van hac, van bac, dan cac
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
loc va » luc va
ve cua » le cua, de cua, te cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu ((van cac) OR (van cau)) ((loc va) OR (hoc va)) trinh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang xa hoi. hieu ((van cac) or (van cau)) ((loc va) OR (hoc va)) trinh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu ((van cac) or (van cau)) ((loc va) OR (hoc va)) trinh ve cua tre*.