Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cau xuc » cam xuc, cau luc, cau truc
va hanh » va thanh, va danh, ban hanh
va cau » van cau, va cac, va dau
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: tu sach ky nang xa hoi. lieu va cau xuc ((va hanh) OR (van hanh)) ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu va cau xuc ((va hanh) OR (van hanh)) ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. lieu va cau xuc ((va hanh) OR (van hanh)) ((vi cua) or (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va cau xuc ((va hanh) OR (van hanh)) ((vi cua) or (di cua)) tre*.