Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vien cac » vien bach, vien dai, vien da
hanh lam » thanh lap, hanh kem, hanh va
lam cua » nam cua, lam chat
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
ky tang » ky dang, kho tang, ky trong
ha hoi » hoa hoi, ha noi, xa hoi
ve cac » va cac

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 tang) or (ky nang)) ha hoi. hieu ((ve cac) or (vien cac)) duc va hanh lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky tang) OR (ky nang)) ha hoi. hieu ((ve cac) OR (vien cac)) duc va hanh lam cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky tang) or (ky nang)) ha hoi. hieu ((ve cac) or (vien cac)) duc va hanh lam cua triet*.