Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
nam thuc » nam thuoc, am thuc, nam thu
thu sach » thuat sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cua triet, dua tren
tu sach » su sach, te sach, tu cach
cong xa » cong xay, cong xua, cong ha
tu cong » thu cong, te cong, tai cong
cuu 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: ((tu sach) or (thu sach)) tu cong xa hoi. hieu van nam thuc va thanh lai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) tu cong xa hoi. hieu van nam thuc va thanh lai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) tu cong xa hoi. hieu van nam thuc va thanh lai ((cua tre) or (cuu tre))*.