Perhaps you should try some spelling variations:
su sach » so sach, vu 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
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
va cau » van cau, va cac, va dau
vi cua » vai 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: su sach ty nang xa hoi. lieu va cau truc va hanh ((vi cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. lieu va cau truc va hanh ((vi cua) OR (hai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. lieu va cau truc va hanh ((vi cua) or (hai cua)) tre*.