Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
te sach » toc sach
van cao » van bao, van hao, van cau
duc van » duc va, duc tan, duc manh
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ((van cao) OR (van dao)) duc van thanh ((vai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ((van cao) OR (van dao)) duc van thanh ((vai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ((van cao) OR (van dao)) duc van thanh ((vai cua) or (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((van cao) OR (van dao)) duc van thanh ((vai cua) or (hai cua)) tre*.