Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
hieu van » hieu va, thien van, lieu va
va thanh » ban thanh, va tinh, le thanh
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
van dau » van dao, phan dau

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 (thuat san)) ky nang x ho. hieu van cam tuc ((va thanh) OR (gia thanh)) van dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (thuat san)) ky nang x ho. hieu van cam tuc ((va thanh) OR (gia thanh)) van dau tren".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (thuat san)) ky nang x ho. hieu van cam tuc ((va thanh) OR (gia thanh)) van dau tren*.