Perhaps you should try some spelling variations:
sach hieu » sach thieu, sach tien, manh hieu
hieu lang » chieu sang, hieu quang, nhieu tang
thai tren » thai tran, thi tren, thai trang
thi hanh » thi thanh
hanh cam » hanh cham, hanh lam, hanh nam
hanh lai » hanh lam, hanh tai, thanh lap
lai thai » lay thai, lai thi, mai thai
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
thuc va » thuc vat, thuc dan, thuc day
xuc va » duc va, tuc va, luc va

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 hieu lang xa hoi. thi hanh cam ((xuc va) or (thuc va)) hanh lai thai tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hieu lang xa hoi. thi hanh cam ((xuc va) OR (thuc va)) hanh lai thai tren.
• Adding a wildcard symbol may retrieve word variants: tu sach hieu lang xa hoi. thi hanh cam ((xuc va) or (thuc va)) hanh lai thai tren*.