Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
minh vi » minh voi, dinh vi, minh va
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, ma hoa, me hoi
va cam » va cham, va cac, va cao
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ((ma hoi) or (mai hoi)). hieu va cam xuc van minh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((ma hoi) OR (mai hoi)). hieu va cam xuc van minh vi su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((ma hoi) or (mai hoi)). hieu va cam xuc van minh vi su triet*.