Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hac duc » hoc duc, thach duc, pham duc
lap cua » lai cua, tap cua, lam cua
ha duc » ho duc, ha dac, xa duc
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: te sach ky nang x hoi. hieu van ((hac duc) or (ha duc)) gia thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu van ((hac duc) OR (ha duc)) gia thanh lap cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu van ((hac duc) or (ha duc)) gia thanh lap cua triet*.