Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
nhan duoc » nhan cuoc, nhan quoc, phan duoc
cua triet » cua viet, su triet, va triet
nhan duc » nhan luc, phan duc, than duc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ca » hieu cac, hieu cua, hieu va
van anh » tuan anh, van minh
y nang » ky nang, ly nang, v nang
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: tu sach y nang xa hoi. hieu ca ((nhan duc) or (nhan duoc)) ((van anh) OR (van thanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ca ((nhan duc) OR (nhan duoc)) ((van anh) OR (van thanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ca ((nhan duc) or (nhan duoc)) ((van anh) OR (van thanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ca ((nhan duc) or (nhan duoc)) ((van anh) OR (van thanh)) vi cua triet*.