Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
tinh dai » trinh dai, tinh da, tinh hai
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
va tinh » may tinh
ve cac » va cac, vien cac
cua te » cua tu
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: hoc sach ky nang x hoi. hieu ((ve cac) or (ve cham)) duc va tinh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang x hoi. hieu ((ve cac) OR (ve cham)) duc va tinh dai cua te.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang x hoi. hieu ((ve cac) or (ve cham)) duc va tinh dai cua te*.