Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
ban hanh » ban hang
cau treo » cau theo, cau tren, cau triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
ve cac » va cac, vien cac
di cau » da cau, diem cau

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 ky nang xa hoi. hieu ve cac luc ((((va hanh) or (ban hanh))) or (van thanh)) di cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang xa hoi. hieu ve cac luc ((((va hanh) OR (ban hanh))) OR (van thanh)) di cau treo.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang xa hoi. hieu ve cac luc ((((va hanh) or (ban hanh))) or (van thanh)) di cau treo*.