Perhaps you should try some spelling variations:
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
duc gia » quoc gia
vi cua » vai cua, di cua
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((lang van) or (dang van)) hoc. hieu ((ve cao) OR (ve bao)) duc gia thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((lang van) OR (dang van)) hoc. hieu ((ve cao) OR (ve bao)) duc gia thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((lang van) or (dang van)) hoc. hieu ((ve cao) OR (ve bao)) duc gia thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((lang van) or (dang van)) hoc. hieu ((ve cao) OR (ve bao)) duc gia thanh vi cua te*.