Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hang co » hang cho, hang ca, nang co
van cau » van dau, van hau, van chat
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty hang co hoc. hieu van cau truc ((ban hanh) or (van hanh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang co hoc. hieu van cau truc ((ban hanh) OR (van hanh)) vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty hang co hoc. hieu van cau truc ((ban hanh) or (van hanh)) vi cuu tre*.