Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hanh di » hanh vi, hanh de, hang di
tuc van » thuc van, truc van, tuc va
di cua » dai cua, doi cua, de cua
cua te » cua tu
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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) or (thu hoach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) tuc van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu hoach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) tuc van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu hoach)) ky nang xa hoi. hieu ((ve cam) or (ve cac)) tuc van hanh di cua te*.