Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc ban » thuc ban, truc ban, tu ban
van cua » vang cua, dan cua, nan cua
ban cua » ban quan
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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) or (vu sach)) y nang xa hoi. hieu ve cam tuc ban thanh ((van cua) OR (ban cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu ve cam tuc ban thanh ((van cua) OR (ban cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) y nang xa hoi. hieu ve cam tuc ban thanh ((van cua) OR (ban cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang xa hoi. hieu ve cam tuc ban thanh ((van cua) OR (ban cua)) triet*.