Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
hieu ve » hieu va, hieu van
thu van » thuc van, thuy van, tu van
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
y lang » tay lang, yen lang
o lang » hoa lang, hoi lang
_ lang » _ land
ve nam » he nam, va nam, le nam
di cua » dai cua, doi cua, de 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) or (o lang))) or (_ lang)) xa hoi. hieu ve nam thu van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((((y lang) OR (o lang))) OR (_ lang)) xa hoi. hieu ve nam thu van hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((((y lang) or (o lang))) or (_ lang)) xa hoi. hieu ve nam thu van hanh di cua tre*.