Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tay lang » tai lang, tay tang, tay quang
dai cuu » dai cua, dai huu
va danh » va dinh, va hanh, dia danh
nam duc » nam duoc, pham duc, nam thuc
te sach » toc sach
ty lang » ty xang, ty hang, tu lang
cuu tre » cua tre, cau tren, cau treo
va dan » ca dan, va dao, 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: te sach ((ty lang) OR (tay lang)) xa hoi. hieu van nam duc ((va danh) or (va dan)) dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (tay lang)) xa hoi. hieu van nam duc ((va danh) OR (va dan)) dai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) OR (tay lang)) xa hoi. hieu van nam duc ((va danh) or (va dan)) dai cuu tre*".