Perhaps you should try some spelling variations:
phuong dan » phuong danh, phuong doan, huong dan
chua xang » chua nang, chuc nang, chu bang
doanh cua » doanh luan
trung cua » truong cua, trung tuan, trung cap
chu xanh » chu manh, chieu xanh, chuc danh
dan khan » dan khanh, dan chan, dan than
khan ap » khan cap, han ap, khan dam

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: chao ((chu xanh) OR (chua xang)) - hanh ((doanh cua) OR (trung cua)) bang phuong dan khan ap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chu xanh) OR (chua xang)) - hanh ((doanh cua) or (trung cua)) bang phuong dan khan ap~".
• Adding a wildcard symbol may retrieve word variants: chao ((chu xanh) OR (chua xang)) - hanh ((doanh cua) or (trung cua)) bang phuong dan khan ap*.