Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach thu » sach thue, sach thieu, sach tham
dai truc » dai thuc, doan truc, dai trung
van hanh » ban hanh, van anh, van ban
nang xa » nang x, lang xa, nang ma
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
va dai » va dao, vi dai, va dau

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 y) or (sach thu)) nang xa hoi. lieu va dai truc ((van hanh) or (van thanh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach thu)) nang xa hoi. lieu va dai truc ((van hanh) OR (van thanh)) vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sach thu)) nang xa hoi. lieu va dai truc ((van hanh) or (van thanh)) vai cuu tre*.