Perhaps you should try some spelling variations:
trinh phan » trinh han, trinh quan, trinh toan
thanh phan » thanh pho, thanh san, thanh toan
dang cong » dung cong
cho manh » ho manh, chu manh, cho minh
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan cao
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: cap cho manh - hanh ((trinh phan) OR (thanh phan)) dang cong dan ((toan tai) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cap cho manh - hanh ((trinh phan) OR (thanh phan)) dang cong dan ((toan tai) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: cap cho manh - hanh ((trinh phan) OR (thanh phan)) dang cong dan ((toan tai) or (toan ban))*.