Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
hieu van » hieu va, thien van, lieu va
ban hang » ngan hang
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
van bao » van ban, van dao
bao duc » dao duc, bao luc, cao duc
cuu tre » cua tre, cau tren, cau treo
y lang » o lang, _ lang, yen lang

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 lang) or (tay lang)) xa hoi. hieu van bao duc ((ban hang) or (ban hanh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y lang) OR (tay lang)) xa hoi. hieu van bao duc ((ban hang) OR (ban hanh)) vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y lang) or (tay lang)) xa hoi. hieu van bao duc ((ban hang) or (ban hanh)) vai cuu tre*.