Perhaps you should try some spelling variations:
hoang van » hang va
lang van » dang van, tang van, giang van
te sach » toc sach
thi van » thi lan, thi hanh, thi nang
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
thu va » thuc va, thue va, tu va
va cua » va chua, via cua, ca 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 van) or (hoang van)) hoe. thi van nam thu va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang van) OR (hoang van)) hoe. thi van nam thu va hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang van) or (hoang van)) hoe. thi van nam thu va hanh va cua tre*.