Perhaps you should try some spelling variations:
thinh bai » thanh bai, tinh bai, tinh bac
nam thuc » nam thuoc, am thuc, nam thu
thuc day » thuc dan, thuc vat
tai khoi » tai khoa, mai khoi, tao khoi
hinh bai » hinh tai, hinh thai, tinh bac
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lieu ha » lieu nha, lieu va, liem ha
tai hoi » dai hoi, tai hai, tai hoe
ky hang » ky nang, ly hang, ky dang
cuu tre » cua 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 ky hang ((tai hoi) OR (tai khoi)). lieu ha nam thuc day ((hinh bai) or (thinh bai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky hang ((tai hoi) OR (tai khoi)). lieu ha nam thuc day ((hinh bai) OR (thinh bai)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky hang ((tai hoi) OR (tai khoi)). lieu ha nam thuc day ((hinh bai) or (thinh bai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky hang ((tai hoi) OR (tai khoi)). lieu ha nam thuc day ((hinh bai) or (thinh bai)) cuu tre*.