Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cao hoi » cau hoi, co hoi, cao hoc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
luc va » duc va, tuc va, loc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang cao hoi. hieu ((va cam) or (va cao)) luc va thanh ((vi cua) or (di cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang cao hoi. hieu ((va cam) OR (va cao)) luc va thanh ((vi cua) OR (di cua)) vat.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang cao hoi. hieu ((va cam) or (va cao)) luc va thanh ((vi cua) or (di cua)) vat*.