Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
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
van cau » van dau, van hau, van chat
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo

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 dang xa hoi. hieu van 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 dang xa hoi. hieu van cau cua ban ((tinh vi) OR (trinh vi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang xa hoi. hieu van cau cua ban ((tinh vi) or (trinh vi)) cuu tre*.