Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu lang » thu hang, thu bang, phu lang
nam thuc » nam thuoc, am thuc, nam tu
thanh ve » thanh va, thanh vien, thanh van
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
hanh ve » hanh vi, hanh va, hanh kem

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 thu lang xa hoi. hieu va ((nam thuc) OR (nam thu)) ban ((thanh ve) or (hanh ve)) cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu lang xa hoi. hieu va ((nam thuc) OR (nam thu)) ban ((thanh ve) OR (hanh ve)) cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu lang xa hoi. hieu va ((nam thuc) OR (nam thu)) ban ((thanh ve) or (hanh ve)) cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sach thu lang xa hoi. hieu va ((nam thuc) OR (nam thu)) ban ((thanh ve) or (hanh ve)) cua vat*.