Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh lai » thanh hai, thanh lap, thanh loi
pham duy » pham duc
hang tai » hang va, dung tai
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
hieu vu » hieu va, hieu ve, hieu su
vu pham » su pham, vi pham, vu kham
tai hoi » tai khoi, dai hoi, tai hai
ty hang » ly hang, ty xang, thi hang
duy va » duy vat, duy van, day va
cua te » cua tu

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) or (thuoc sach)) ty hang tai hoi. hieu vu pham duy va thanh lai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ty hang tai hoi. hieu vu pham duy va thanh lai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ty hang tai hoi. hieu vu pham duy va thanh lai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ty hang tai hoi. hieu vu pham duy va thanh lai ((cua tre) OR (cua te))*.