Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
te sach » toc sach
y nang » ky nang, ly nang, v nang
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
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 cai) or (va cam)) tuc ((van hanh) or (ban hanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ((ve cai) OR (va cam)) tuc ((van hanh) OR (ban hanh)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ((ve cai) or (va cam)) tuc ((van hanh) or (ban hanh)) vi cua te*.