Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, te sach, tu cach
vai cuu » vai cua
tuc van » thuc van, truc van, tuc va
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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 sang ma hoi. hieu ((ve cham) or (vu cham)) tuc van hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky sang ma hoi. hieu ((ve cham) OR (vu cham)) tuc van hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky sang ma hoi. hieu ((ve cham) or (vu cham)) tuc van hanh vai cuu tre*.