Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
va triet » va thiet, va trien, ve triet
hieu van » hieu va, thien van, lieu va
day ban » tay ban, da ban, day dan
tu sach » thu sach, su sach, tu cach
bac day » bac dai, bac dan, bac thay
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
van bac » van ban, van bao, van hac
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 (te sach)) ty nang x hoi. hieu van bac day ban thanh lap ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang x hoi. hieu van bac day ban thanh lap ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ty nang x hoi. hieu van bac day ban thanh lap ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ty nang x hoi. hieu van bac day ban thanh lap ((cua triet) OR (va triet))*.