Perhaps you should try some spelling variations:
ban trinh » ban tinh, dan trinh, van trinh
cau tren » dau tren, ca tren, cau treo
trinh va » trinh van, trinh vat, trinh ve
tu sach » thu sach, su sach, tu cach
cac cua » cach cua, cac qua, ca cua
hieu ve » hieu va, hieu van
cu tren » tu tren, dua tren
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
ve cac » va cac, vien cac

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: ((tu sach) OR (te sach)) ky lang xa hoi. hieu ve cac cua ban trinh va ((cau tren) OR (cu tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky lang xa hoi. hieu ve cac cua ban trinh va ((cau tren) OR (cu tren))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky lang xa hoi. hieu ve cac cua ban trinh va ((cau tren) OR (cu tren))*.