Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
duy sang » duy van, duy can, duy anh
van hanh » van thanh, ban hanh, van anh
cham sat » cham mat, cham soc, khao sat
sat van » sat va, hat van, hoat van
ky sang » ky dang, ky tang
vai cua » dai cua, hai cua, lai cua
dai hoi » dai hoc, dai hai, dai moi
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
tu sac » tu sach, tu cac, tu san
cua te » cua tu

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 sang) OR (duy sang))) or (ky nang)) dai hoi. hieu vu cham sat van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((((ky sang) OR (duy sang))) OR (ky nang)) dai hoi. hieu vu cham sat van hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((((ky sang) OR (duy sang))) or (ky nang)) dai hoi. hieu vu cham sat van hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ((((ky sang) OR (duy sang))) or (ky nang)) dai hoi. hieu vu cham sat van hanh vai cua te*.