Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh dinh » thanh dinh, hinh dinh, hanh tinh
hanh sinh » hanh tinh, hinh sinh, hanh chinh
toc cham » toc thai
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y lang xa hoi. hieu ((ve cam) or (toc cham)) duc va ((hanh sinh) OR (hanh dinh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y lang xa hoi. hieu ((ve cam) OR (toc cham)) duc va ((hanh sinh) OR (hanh dinh)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y lang xa hoi. hieu ((ve cam) or (toc cham)) duc va ((hanh sinh) OR (hanh dinh)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y lang xa hoi. hieu ((ve cam) or (toc cham)) duc va ((hanh sinh) OR (hanh dinh)) cua tre*.