Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
hieu va » hieu qua
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang

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 ((y lang) OR (_ land)) xa hoi. ((hieu va) OR (lieu va)) cam tuc van hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y lang) OR (_ land)) xa hoi. ((hieu va) OR (lieu va)) cam tuc van hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y lang) OR (_ land)) xa hoi. ((hieu va) OR (lieu va)) cam tuc van hanh vai cua tre*.