Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
lang van » dang van, tang van, hoang van
vai cuu » vai cua
dan vai » dan va, dan tai, dan vat
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
sach ty » sach tu, sach thu, xach tay
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: toc ((sach y) or (sach ty)) lang van hoi. hieu va ((nha thuoc) or (am thuc)) va dan vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach y) OR (sach ty)) lang van hoi. hieu va ((nha thuoc) OR (am thuc)) va dan vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach y) or (sach ty)) lang van hoi. hieu va ((nha thuoc) or (am thuc)) va dan vai cuu tre*.