Perhaps you should try some spelling variations:
vu khach » vu khac, vay khach, cua khach
vu khanh » vu thanh, van khanh, duy khanh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
co xuc » co xuoc, co xua
xuc va » duc va, tuc va, luc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua
va co » vo co

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) or (vu khanh)) ky nang xa hoi. hieu va co xuc va hanh ((vi cua) OR (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (vu khanh)) ky nang xa hoi. hieu va co xuc va hanh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) or (vu khanh)) ky nang xa hoi. hieu va co xuc va hanh ((vi cua) OR (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (vu khanh)) ky nang xa hoi. hieu va co xuc va hanh ((vi cua) OR (di cua)) tre*.