Perhaps you should try some spelling variations:
cac truc » cau truc, cac tru, cac trung
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
y nang » ky nang, ly nang, v nang
di cuu » di cua, dinh cuu
di cau » da cau, diem cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sanh)) y nang xa hoi. hieu van cac truc va danh ((di cuu) OR (di cau)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sanh)) y nang xa hoi. hieu van cac truc va danh ((di cuu) OR (di cau)) tre~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sanh)) y nang xa hoi. hieu van cac truc va danh ((di cuu) OR (di cau)) tre*.