Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu nang » thi nang, thu hang, thu bang
sach thu » sach thue, sach thieu, sach tham
dinh vi » dinh ve, dinh viet, dinh tri
su sach » so sach, vu sach
qua cam » qua cham, qua cac, qua ca
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, ma hoa, me hoi
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 thu nang ((ma hoi) OR (xa hoi)). hieu qua cam ((duc va) or (tuc va)) dinh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu nang ((ma hoi) OR (xa hoi)). hieu qua cam ((duc va) OR (tuc va)) dinh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu nang ((ma hoi) OR (xa hoi)). hieu qua cam ((duc va) or (tuc va)) dinh vi cua triet*".