Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dinh vi » dinh ve, dinh viet, dinh tri
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
ma hoi » xa hoi, ma hoa, me hoi
tuc va » thuc va, truc va, tuc xa
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 ty nang ((ma hoi) OR (mai hoi)). hieu va 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 ty nang ((ma hoi) OR (mai hoi)). hieu va 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 ty nang ((ma hoi) OR (mai hoi)). hieu va cam ((duc va) or (tuc va)) dinh vi cua triet*".