Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
cuu tre » cua tre, cau treo
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
lai hoi » dai hoi, lai hoa, lai roi
cam ky » cao ky, cac ky
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa
tu cam » tu cham, tu cac, tu nam

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 cam ky nang ((ma hoi) OR (lai hoi)). hieu van cam tuc va thanh van ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cam ky nang ((ma hoi) or (lai hoi)). hieu van cam tuc va thanh van ((cuu tre) OR (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang ((ma hoi) or (lai hoi)). hieu van cam tuc va thanh van ((cuu tre) OR (cau tren))*.