Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
huu thuc » cuu thuc, huu phuc, huu thu
huu them » huu thu, huu liem, huu tam
va thanh » gia thanh, ban thanh, va tinh
cac duc » cac du, cao duc, cac dac
te sach » toc sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi
ve cac » va cac, vien cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (ma hoa)). hieu ve cac duc va thanh dai ((huu them) OR (huu thuc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) or (ma hoa)). hieu ve cac duc va thanh dai ((huu them) OR (huu thuc))~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (ma hoa)). hieu ve cac duc va thanh dai ((huu them) OR (huu thuc))*.