Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
hoc sach » hoc sinh, hoc cac, hoc anh
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
co sach » bo sach, cuon sach
hieu va » lieu va
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
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: ((co sach) OR (hoc sach)) ty nang xa hoi. ((hieu va) or (hieu qua)) cam luc van thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co sach) OR (hoc sach)) ty nang xa hoi. ((hieu va) OR (hieu qua)) cam luc van thanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co sach) OR (hoc sach)) ty nang xa hoi. ((hieu va) or (hieu qua)) cam luc van thanh vi cua triet*".