Perhaps you should try some spelling variations:
toan thanh » tran thanh, hoan thanh, tan thanh
thien van » thi van
cua triet » cua viet, su triet, va triet
duc toan » duc tan, duc ton, duc hoan
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van lam » van nam
lam duc » lam duoc, pham duc, nam duoc
san cua » sang cua, ban cua, dan cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang xa) or (nang cao)) hoi. thien van lam duc toan thanh san cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (nang cao)) hoi. thien van lam duc toan thanh san cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (nang cao)) hoi. thien van lam duc toan thanh san cua triet*.