Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
va cham » va chat, va tham
va hanh » va thanh, va danh, ban hanh
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
cua te » cua tu
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 ((ve cam) or (va cham)) duc ((va hanh) OR (van hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ((ve cam) OR (va cham)) duc ((va hanh) OR (van hanh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ((ve cam) or (va cham)) duc ((va hanh) OR (van hanh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((ve cam) or (va cham)) duc ((va hanh) OR (van hanh)) vai cua te*.