Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
sanh ky » hanh ky, sang ky, nganh ky
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cac » van hac, van cau, van bac
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va danh, ban hanh
vai cua » hai cua, lai cua, bai cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: do sanh ky lang xa hoi. hieu van cac duc ((va hanh) OR (va thanh)) ((vai cua) OR (dai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "do sanh ky lang xa hoi. hieu van cac duc ((va hanh) OR (va thanh)) ((vai cua) or (dai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: do sanh ky lang xa hoi. hieu van cac duc ((va hanh) OR (va thanh)) ((vai cua) or (dai cua)) tre*.