Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
lanh lay » thanh lay, lanh dao, hanh lam
cao duc » dao duc, cao suc, giao duc
vai cua » dai cua, hai cua, lai cua
van anh » tuan anh, van minh
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ve cao » va cao, ve bao, ve cac
lanh y » anh y, hanh y
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((lanh y) or (lanh lay)) nang ma hoi. hieu ve cao duc ((van anh) OR (van thanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((lanh y) OR (lanh lay)) nang ma hoi. hieu ve cao duc ((van anh) OR (van thanh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((lanh y) or (lanh lay)) nang ma hoi. hieu ve cao duc ((van anh) OR (van thanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat ((lanh y) or (lanh lay)) nang ma hoi. hieu ve cao duc ((van anh) OR (van thanh)) vai cua tre*.