Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, xuc ban
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
ve cam » ve cac, va cam, ve cai
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh ((vi cua) or (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh ((vi cua) or (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh ((vi cua) or (vai cua)) triet*.