Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
cau triet » cau trieu, su triet, cua triet
ban thanh » ban hanh, ban hang
thuc ban » thuoc ban, thuc dan, thu ban
coc thuc » hoc thuc, doc thuc, co thuc
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve coc » ve cuoc, ve cac, ve co
v nang » va nang, vu nang, van nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (su sach)) v nang x hoi. hieu ve coc thuc ban thanh vien ((cau triet) or (cau thi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) v nang x hoi. hieu ve coc thuc ban thanh vien ((cau triet) OR (cau thi)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) v nang x hoi. hieu ve coc thuc ban thanh vien ((cau triet) or (cau thi))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) v nang x hoi. hieu ve coc thuc ban thanh vien ((cau triet) or (cau thi))*.