Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van ban
chat duc » chat xuc, chat doc, chet duoc
van anh » van thanh, tuan anh, van minh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach 2, sach vay
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 v) or (sach y)) nang xa hoi. hieu ve chat duc ((van hanh) OR (van anh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach y)) nang xa hoi. hieu ve chat duc ((van hanh) OR (van anh)) di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach y)) nang xa hoi. hieu ve chat duc ((van hanh) OR (van anh)) di cua tre*".