Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
nang cho » nang chon, ngang cho, nang cao
thai cua » than cua, tai cuc, tri cua
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
cho hoc » co hoc, khoa hoc
sach ky » sac ky, sach y, sach ty
dua ban » dia ban, cua ban, qua ban
ve cai » va cai, ve tai, ve cau
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cau
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 ky nang cho hoc. hieu ((((ve cam) OR (ve cai))) or (ve cac)) dua ban hanh thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cho hoc. hieu ((((ve cam) OR (ve cai))) OR (ve cac)) dua ban hanh thai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang cho hoc. hieu ((((ve cam) OR (ve cai))) or (ve cac)) dua ban hanh thai cua te*".