Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
2 dang » 2 danh, b dang, o dang
_ dang » _ dan, _ danh, b dang
vi cua » vai cua, di cua

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 ((2 dang) or (_ dang)) xa hoi. hieu qua cam duc ((va hanh) OR (va danh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((2 dang) OR (_ dang)) xa hoi. hieu qua cam duc ((va hanh) OR (va danh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((2 dang) or (_ dang)) xa hoi. hieu qua cam duc ((va hanh) OR (va danh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((2 dang) or (_ dang)) xa hoi. hieu qua cam duc ((va hanh) OR (va danh)) vi cua triet*.