Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
cham tuc » nham thuc, pham thuc, tham thuc
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tuc van » thuc van, truc van, tuc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (((so sach) OR (co sach)))) ky nang xa hoi. hieu ve cham tuc van thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (((so sach) OR (co sach)))) ky nang xa hoi. hieu ve cham tuc van thanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (((so sach) OR (co sach)))) ky nang xa hoi. hieu ve cham tuc van thanh vi cua triet*".