Perhaps you should try some spelling variations:
cham luu » cham cuu, chat lua, phap luu
tran van » luan van
tuan van » luan van, tan van, quan van
luu hanh » huu han
te sach » toc sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua
chu tre » cho tre, chu tri, cuu tre

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 ((mang xa) or (lang xa)) hoi. hieu ve cham luu hanh ((tuan van) OR (tran van)) chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((mang xa) OR (lang xa)) hoi. hieu ve cham luu hanh ((tuan van) OR (tran van)) chu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((mang xa) or (lang xa)) hoi. hieu ve cham luu hanh ((tuan van) OR (tran van)) chu tre*".