Perhaps you should try some spelling variations:
hoang van » hang va
lang van » dang van, tang van, giang van
hieu van » hieu va, thien van, lieu va
hanh tri » thanh tri, hanh tai, hanh trinh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
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 _ ((lang van) OR (hoang van)) hoe. ((hieu ve) or (hieu van)) cam xuc va hanh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ ((lang van) OR (hoang van)) hoe. ((hieu ve) OR (hieu van)) cam xuc va hanh tri cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ ((lang van) OR (hoang van)) hoe. ((hieu ve) or (hieu van)) cam xuc va hanh tri cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach _ ((lang van) OR (hoang van)) hoe. ((hieu ve) or (hieu van)) cam xuc va hanh tri cua te*.