Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
lang van » dang van, tang van, hoang van
vai cuu » vai cua
tuc van » thuc van, truc van, tuc va
cac tuc » cac toc, cac tu, cac tac
van cac » van hac, van cau, van bac
bo sach » co sach, hoc sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
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: bo sach y ((((nang xa) or (lang van))) or (nang ma)) hoi. hieu van cac tuc van hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y ((((nang xa) OR (lang van))) OR (nang ma)) hoi. hieu van cac tuc van hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: bo sach y ((((nang xa) or (lang van))) or (nang ma)) hoi. hieu van cac tuc van hanh vai cuu tre*.