Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
lam cua » nam cua, lam chat
va hanh » van hanh, va thanh, va danh
cac dac » cac dan, cac dai, cac bac
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
ha hoi » hoa hoi, ha noi, xa hoi
dac va » duc va, day va, dat va

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) OR (hieu qua)) cac dac va hanh lam 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) OR (hieu qua)) cac dac va hanh lam 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) OR (hieu qua)) cac dac va hanh lam cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky lang ha hoi. ((hieu va) OR (hieu qua)) cac dac va hanh lam cua triet*.