Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cam truc » cau truc, nam truc, lam truoc
truc van » truc va, thuc van, truc ban
van hang » van khang, van hoang, van thang
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
van cam » van nam, van lam, van cau
di cua » doi cua, de cua, do cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu van cam truc van hang ((di cua) OR (dai cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu van cam truc van hang ((di cua) OR (dai cua)) triet*.