Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
lang hoa » hang hoa, lang ha, nang hoa
lam cua » nam cua, lam chat
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
ve cac » va cac, vien cac
ve cao » va cao, ve bao, ve co

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 lang hoa hoi. hieu ((ve cao) or (ve cac)) duc ((ban thanh) or (gia thanh)) lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang hoa hoi. hieu ((ve cao) OR (ve cac)) duc ((ban thanh) OR (gia thanh)) lam cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang hoa hoi. hieu ((ve cao) or (ve cac)) duc ((ban thanh) or (gia thanh)) lam cua triet*.