Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
van hanh » van thanh, ban hanh, van anh
than cui » than cua, than nui, thanh qui
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
xuc van » duc van, luc van, vuc van
cui tre » cua tre, cuu tre, tuoi tre
ang xa » lang xa, mang xa, dang xay
va bac » van bac, va cac, va bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((ang xa) or (mang may)) hoi. lieu va bac xuc van hanh than cui tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((ang xa) OR (mang may)) hoi. lieu va bac xuc van hanh than cui tre.
• Adding a wildcard symbol may retrieve word variants: so sach ty ((ang xa) or (mang may)) hoi. lieu va bac xuc van hanh than cui tre*.