Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ty » sach ty
hanh tai » thanh tai, hang tai, han tai
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
dan bac » dan ba, dong bac, gian bac
van bac » van ban, van hac, van bau
van bao » van ban, van dao
va hanh » van hanh, va thanh, va danh
cuc tre » duc tre, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ty nang xa hoi. hieu ((((dan bac) or (van bac))) or (van bao)) duc va hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ty nang xa hoi. hieu ((((dan bac) OR (van bac))) OR (van bao)) duc va hanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: vu khach ty nang xa hoi. hieu ((((dan bac) or (van bac))) or (van bao)) duc va hanh tai cuc tre*.