Perhaps you should try some spelling variations:
sach tham » sach nha
sach thu » sach thue, sach thieu, cach thuc
hanh tai » thanh tai, hang tai, han tai
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » hieu qua
hang xa » hoang xa, hang va, hang ca
tai cua » thai cua, tai cuc, tri cua
tuc va » thuc va, truc va, tuc xa

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) OR (sach tham)) hang xa hoi. ((hieu va) or (lieu va)) cam tuc va hanh tai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach tham)) hang xa hoi. ((hieu va) OR (lieu va)) cam tuc va hanh tai cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach tham)) hang xa hoi. ((hieu va) or (lieu va)) cam tuc va hanh tai cua vat*".