Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kham duc » pham duc, kham cuoc, pham duy
thu tang » thu trang, thu thang, thu hang
van hanh » van thanh, ban hanh, van anh
sach thu » sach thue, sach thieu, sach tham
lam cua » nam cua, lam chat
va hanh » va thanh, va danh, ban hanh
so sach » so sanh, bo sach, co sach
vu kham » vu khanh
hieu vu » hieu va, hieu ve, hieu su
ma hoi » mai hoi, ma hoa, me hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu tang ((ma hoi) or (xa hoi)). hieu vu kham duc ((va hanh) OR (van hanh)) lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu tang ((ma hoi) OR (xa hoi)). hieu vu kham duc ((va hanh) OR (van hanh)) lam cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu tang ((ma hoi) or (xa hoi)). hieu vu kham duc ((va hanh) OR (van hanh)) lam cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach thu tang ((ma hoi) or (xa hoi)). hieu vu kham duc ((va hanh) OR (van hanh)) lam cua triet*.