Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cac duc » cac du, cao duc, cac dac
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
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 ty nang xa hoi. lieu va cac duc va danh ((vi cua) OR (vai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. lieu va cac duc va danh ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. lieu va cac duc va danh ((vi cua) OR (vai cua)) tre*.