Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
trinh ve » trinh he, trinh vi, trinh viet
trinh va » trinh van, trinh vat, trinh vi
cac cua » cach cua, cac qua, ca cua
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va, hieu van
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) OR (trinh ve)) cau 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) OR (trinh ve)) cau 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) OR (trinh ve)) cau tren*.