Perhaps you should try some spelling variations:
sach tra » sach tranh, sach tham, sach tren
tra nang » thi nang, kha nang, da nang
ban hanh » ban hang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
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 tra nang xa hoi. hieu va 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 tra nang xa hoi. hieu va cac xuc ((va hanh) OR (ban hanh)) ((vi cua) OR (di cua)) triet.
• Adding a wildcard symbol may retrieve word variants: su sach tra nang xa hoi. hieu va cac xuc ((va hanh) or (ban hanh)) ((vi cua) or (di cua)) triet*.