Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
cua duc » cua nuoc, cua quoc
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va, hieu van
cua tuc » cua tu, cua thuoc, luat tuc
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, may nang
ve cam » ve cham, ve cac, va cam
v nang » va nang, vu nang, van nang

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: tu sach ((y nang) OR (v nang)) mai hoi. hieu ve cam xuc ban thanh vi ((cua duc) OR (cua tuc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (v nang)) mai hoi. hieu ve cam xuc ban thanh vi ((cua duc) OR (cua tuc))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) mai hoi. hieu ve cam xuc ban thanh vi ((cua duc) OR (cua tuc))*.