Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
thanh lam » hanh lam, thanh nam, thanh tam
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
su sach » so sach, vu sach
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
so sanh » do sanh
hieu va » lieu va, hieu qua
ha hoi » hoa hoi, ha noi, xa hoi

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