Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
tinh ve » trinh ve, tinh ven, dinh ve
va tinh » may tinh
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
ho hoi » hoc hoi, hoi hoi, co hoi
xuc va » duc va, tuc va, luc va
ve va » ve van, te va, ke va

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) or (su sach)) ky nang ((ho hoi) OR (hoa hoi)). hieu qua cac xuc va tinh ve va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ((ho hoi) OR (hoa hoi)). hieu qua cac xuc va tinh ve va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang ((ho hoi) OR (hoa hoi)). hieu qua cac xuc va tinh ve va triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang ((ho hoi) OR (hoa hoi)). hieu qua cac xuc va tinh ve va triet*.