Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
ma hoi » mai hoi, xa hoi, ma hoa
va nam » van nam, va nay
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
cua te » cua tu

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 (hoc sach)) ky nang ma hoi. hieu ((va nam) or (ha nam)) xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (hoc sach)) ky nang ma hoi. hieu ((va nam) OR (ha nam)) xuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (hoc sach)) ky nang ma hoi. hieu ((va nam) or (ha nam)) xuc va hanh vi cua te*.