Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
tham cuu » cham cuu, tham cung, thai cua
van tuan » van quan, van ban, anh tuan
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
le cua » ly cua
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) or (tu sach)) ky nang x hoi. hieu va tham cuu van tuan le cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky nang x hoi. hieu va tham cuu van tuan le cua triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) ky nang x hoi. hieu va tham cuu van tuan le cua triet*.