Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
lo lang » o lang, le lang, hoa lang
so lang » o lang, so dang, hoa lang
van hoi » van hoa, van hoc, van hoe
thi van » thi lan, thi hanh, thi nang
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
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 ((lo lang) OR (so lang)) van hoi. thi van nam ((xuc van) or (duc manh)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((lo lang) OR (so lang)) van hoi. thi van nam ((xuc van) OR (duc manh)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((lo lang) OR (so lang)) van hoi. thi van nam ((xuc van) or (duc manh)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((lo lang) OR (so lang)) van hoi. thi van nam ((xuc van) or (duc manh)) hanh vi cua tre*.