Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
cac cuoc » cac nuoc, ca cuoc, cac quoc
doc sach » hoc sach, nuoc sach, dac sac
ban hang » ngan hang
van hanh » van thanh, ban hanh, van anh
nang cho » nang chon, ngang cho, nang cao
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
ty nang » ky nang, ty xang, ty hang
cua cay » cua cac
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (doc sach)) ty nang cho hoc. hieu ve cac cuoc ((van hanh) or (ban hang)) vi cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ty nang cho hoc. hieu ve cac cuoc ((van hanh) OR (ban hang)) vi cua cay*.