Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
lang van » dang van, tang van, hoang van
cuc ban » cua ban, cuu ban, duc ban
lam cua » nam cua, lam chat
cac ban » cac dan, cac van, can ban
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay

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