Perhaps you should try some spelling variations:
van thai » van thoai, van tai, van hai
nang xa » nang x, lang xa, nang ma
va thai » va tai, va tham, va thi
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
te cac » tu cac, ve cac, te cao
son va » song va, son la, lon va
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky nang xa hoi. hieu ((va thai) OR (van thai)) son va hanh ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang xa hoi. hieu ((va thai) OR (van thai)) son va hanh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky nang xa hoi. hieu ((va thai) OR (van thai)) son va hanh ((vi cua) or (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te cac ky nang xa hoi. hieu ((va thai) OR (van thai)) son va hanh ((vi cua) or (vai cua)) tre*.