Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
cao duc » dao duc, giao duc, tao duoc
cao suc » cao su
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. lieu va ((cao duc) or (cao suc)) ban thanh hai ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. lieu va ((cao duc) OR (cao suc)) ban thanh hai ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. lieu va ((cao duc) or (cao suc)) ban thanh hai ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. lieu va ((cao duc) or (cao suc)) ban thanh hai ((cua triet) OR (cua viet))*.