Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
te sach » toc sach
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, va cam, ve cai
ve cac » va cac, vien cac
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: te sach y lang xa hoi. hieu ((ve cam) OR (ve cac)) tu ((van hanh) or (ban hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. hieu ((ve cam) OR (ve cac)) tu ((van hanh) OR (ban hanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang xa hoi. hieu ((ve cam) OR (ve cac)) tu ((van hanh) or (ban hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y lang xa hoi. hieu ((ve cam) OR (ve cac)) tu ((van hanh) or (ban hanh)) vi cua tre*.