Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, va hanh
xuc va » duc va, tuc va, luc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (vu khach)) ky nang xa hoi. hieu van cam xuc va danh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu khach)) ky nang xa hoi. hieu van cam xuc va danh ((vi cua) OR (di cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu khach)) ky nang xa hoi. hieu van cam xuc va danh ((vi cua) or (di cua)) tre*".