Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thu hoach
van hanh » ban hanh, van anh, van ban
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
le lang » le tang, le dang, le xang
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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

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