Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
dang xay » dang van, van xay
van hanh » ban hanh, van anh, van ban
su sach » so sach, vu sach
vai cuu » vai cua
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam

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 y ((nang xa) or (dang xay)) hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (dang xay)) hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang xa) or (dang xay)) hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (dang xay)) hoi. hieu ve cam xuc ((van hanh) OR (van thanh)) vai cuu tre*.