Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
luat van » luat dan, luat va, luat ban
van luan » van quan, van tuan, von luan
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve phap » va phap, de phap, ve phan
cua tre » cua te, cuu tre, dua tren
tu sac » tu cac, tu san, tu bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu sach)) ky nang xa hoi. hieu ve phap luat van luan van ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang xa hoi. hieu ve phap luat van luan van ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu sach)) ky nang xa hoi. hieu ve phap luat van luan van ((cua tre) OR (cua triet))*".