Perhaps you should try some spelling variations:
cua ngan » cua ban, vu ngan, cua dan
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
cua nam » cua tam, cua nhan
van cau » van dau, van hau, van chat
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
va cau » va cac, va dau, va cao
o hoi » co hoi, o hoc, o hai

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 o hoi. bieu ((cua nam) or (cua ngan)) thuoc va thanh ((va cau) OR (van cau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o hoi. bieu ((cua nam) OR (cua ngan)) thuoc va thanh ((va cau) OR (van cau)) treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang o hoi. bieu ((cua nam) or (cua ngan)) thuoc va thanh ((va cau) OR (van cau)) treo".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o hoi. bieu ((cua nam) or (cua ngan)) thuoc va thanh ((va cau) OR (van cau)) treo*.