Perhaps you should try some spelling variations:
nang ha » nang hai, nang han, nang hoa
va tham » van tham, va thanh, va thuat
va cham » va chat
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
te cac » tu cac, ve cac, te cao
ha hoi » hoa hoi, ha noi, xa hoi
soc va » hoc va, loc va, doc 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 ha hoi. hieu ((va tham) OR (va cham)) soc 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 ha hoi. hieu ((va tham) OR (va cham)) soc 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 ha hoi. hieu ((va tham) OR (va cham)) soc va hanh ((vi cua) or (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te cac ky nang ha hoi. hieu ((va tham) OR (va cham)) soc va hanh ((vi cua) or (vai cua)) tre*.