Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
sach ty » sach y, sach tu, sach thu
duc ban » duc tan, duc van, dua ban
nang xa » lang xa, nang ma, mang xa
van cua » vang cua, ban cua, dan cua
su sach » so sach, vu sach

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 ty ((nang xa) OR (nang x)) hoi. hieu ((van lam) or (van nam)) duc ban thanh van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang x)) hoi. hieu ((van lam) OR (van nam)) duc ban thanh van cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) OR (nang x)) hoi. hieu ((van lam) or (van nam)) duc ban thanh van cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) OR (nang x)) hoi. hieu ((van lam) or (van nam)) duc ban thanh van cua triet*.