Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
thu sach » thuat sach, thuoc sach, thu hoach
thuc ban » thuoc ban, thuc dan, thu ban
hac thuc » hoc thuc, ha thuc, thach thuc
thi van » thi lan, thi hanh, thi nang
lap cua » lai cua, tap cua, lam cua
van hac » van hoc, van ha, van hai
tu sach » su sach, te sach, tu cach
nang xa » lang xa, nang ma, mang xa

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 (thu sach)) ty ((nang xa) or (nang x)) hoi. thi van hac thuc ban thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty ((nang xa) OR (nang x)) hoi. thi van hac thuc ban thanh lap cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ty ((nang xa) or (nang x)) hoi. thi van hac thuc ban thanh lap cua triet*.