Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
dang mai » dang hai, dang mau, dang bai
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
tuc ban » thuc ban, truc ban, tu ban
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
ky dang » ky nang, ky danh
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: ((tu sach) or (thu hoach)) ky dang mai hoi. hieu ((va cac) or (ve cham)) tuc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky dang mai hoi. hieu ((va cac) OR (ve cham)) tuc ban thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky dang mai hoi. hieu ((va cac) or (ve cham)) tuc ban thanh vi cua tre*.