Perhaps you should try some spelling variations:
canh manh » lanh manh, canh tranh, cach mang
huong van » huong dan, duong van, luong van
hoc dieu » hoc thieu
manh cua » doanh cua, ban cua
cua doan » cua doanh, cua dan, cua toan
hong van » hoang van, thong van, phong van
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc hien)) hanh - canh manh cua doan ((huong van) OR (hong van)) toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc hien)) hanh - canh manh cua doan ((huong van) OR (hong van)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc hien)) hanh - canh manh cua doan ((huong van) OR (hong van)) toan ban*.