Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
tu sach » thu sach, su sach, tu cach
van cau » van dau, van hau, van chat
van tai » von tai, van tuan
tai cua » thai cua, tai cuc, tri cua
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (tu sach)) ky nang x ho. hieu van cau ((xuc va) OR (luc va)) van tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (tu sach)) ky nang x ho. hieu van cau ((xuc va) OR (luc va)) van tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (tu sach)) ky nang x ho. hieu van cau ((xuc va) OR (luc va)) van tai cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (tu sach)) ky nang x ho. hieu van cau ((xuc va) OR (luc va)) van tai cua te*.