Perhaps you should try some spelling variations:
thuc giai » thuoc giao, thuc thai, thue gia
thanh doi » thanh loi, thanh moi, thanh do
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
hoc giai » hoc giao, hoc dai, so giai
doi cua » dai cua, hoi cua
y nang » ky nang, ly nang, v nang
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: thu sach y nang x hoi. hieu van nam ((thuc giai) OR (hoc giai)) thanh doi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang x hoi. hieu van nam ((thuc giai) OR (hoc giai)) thanh doi cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu van nam ((thuc giai) OR (hoc giai)) thanh doi cua triet*.