Perhaps you should try some spelling variations:
phap luu » phap lua, phap luat, phap luan
van tuan » van quan, van ban, anh tuan
phap cuu » phap cau, phap chu, phap chua
van luan » van quan, von luan, vay luan
tu sach » thu sach, su sach, te sach
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve ((phap cuu) OR (phap luu)) ((van luan) OR (van tuan)) van cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ve ((phap cuu) or (phap luu)) ((van luan) OR (van tuan)) van cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve ((phap cuu) or (phap luu)) ((van luan) OR (van tuan)) van cua tre*.