Perhaps you should try some spelling variations:
trinh ve » trinh he, trinh va, trinh vi
va trinh » van trinh, va tinh, lap trinh
su sach » vu sach
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
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
loc va » hoc 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) OR (so sach)) ky lang xa hoi. hieu ((van cac) OR (van cau)) loc va trinh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky lang xa hoi. hieu ((van cac) or (van cau)) loc va trinh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky lang xa hoi. hieu ((van cac) or (van cau)) loc va trinh ve cua tre*.