Perhaps you should try some spelling variations:
trinh vi » trinh va, trinh ve, trinh viet
tu sach » thu sach, su sach, tu cach
tinh vi » tinh voi, tinh va, dinh vi
cau cua » cau qua, ca cua, cu cua
cuu tre » cua tre, cau tren, cau treo
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 cau » ke cau, va cau, ve cac

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

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