Perhaps you should try some spelling variations:
dung chung » dung cong, dung ung, dung trung
doanh luan » doanh nhan
chung danh » nhung danh, nhung doanh, phuong danh
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
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.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh ((manh cua) or (doanh luan)) dung chung danh ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((manh cua) OR (doanh luan)) dung chung danh ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((manh cua) or (doanh luan)) dung chung danh ((toan tai) or (toan ban))*.