Perhaps you should try some spelling variations:
sach tham » sach nha
hanh vai » hanh vi, hanh va, hanh tai
vai cuu » vai cua
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
luc va » tuc va, loc va

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 tham)) nang ma hoi. hieu ve cam ((luc 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 tham)) nang ma hoi. hieu ve cam ((luc va) OR (duc va)) hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tham)) nang ma hoi. hieu ve cam ((luc va) or (duc va)) hanh vai cuu tre*.