Perhaps you should try some spelling variations:
bach khoa » anh khoa
hieu vien » hieu hien, hieu viec, thieu nien
bach hoa » bach ha, cach hoan, hoach hoa
danh vai » danh sai, danh va, doanh van
van danh » van doanh, van anh, van hanh
vai cuu » vai cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang xa) OR (lang xa)) hoi. hieu vien ((bach hoa) or (bach khoa)) van danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang xa)) hoi. hieu vien ((bach hoa) OR (bach khoa)) van danh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) OR (lang xa)) hoi. hieu vien ((bach hoa) or (bach khoa)) van danh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) OR (lang xa)) hoi. hieu vien ((bach hoa) or (bach khoa)) van danh vai cuu tre*.