Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
ve cham » va cham, ve chat, ve chim
vu cham » va cham, vu kham, tu cham
san cau » van cau, ban cau, can cau
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang ma hoi. hieu ((ve cham) or (vu cham)) xuc va thanh san cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang ma hoi. hieu ((ve cham) OR (vu cham)) xuc va thanh san cau tren.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang ma hoi. hieu ((ve cham) or (vu cham)) xuc va thanh san cau tren*.