Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
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: su sach tru nang xa hoi. hieu van cac xuc ((va hanh) or (ban hanh)) ((vi cua) OR (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tru nang xa hoi. hieu van cac xuc ((va hanh) OR (ban hanh)) ((vi cua) OR (di cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tru nang xa hoi. hieu van cac xuc ((va hanh) or (ban hanh)) ((vi cua) OR (di cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach tru nang xa hoi. hieu van cac xuc ((va hanh) or (ban hanh)) ((vi cua) OR (di cua)) triet*.