Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
hieu ve » hieu va, hieu van
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va
x hoi » xa hoi, o hoi, x ho

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 ty) OR (sach tu)) nang x hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang x hoi. hieu ve cam ((xuc va) OR (duc va)) hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) nang x hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach tu)) nang x hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cuu tre*.