Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
trinh suat » trinh luat, trinh sat, trinh quan
phuong dan » phuong danh, phuong doan, huong dan
hoc thieu » toc thieu, hoc hien
suat dung » thuat dung, xuat duong, suat huong
toan tai » doanh tai, toan cao, von tai
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: hoc thieu xanh - hanh trinh suat dung phuong dan ((((toan tai) OR (toan tap))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh suat dung phuong dan ((((toan tai) OR (toan tap))) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh suat dung phuong dan ((((toan tai) OR (toan tap))) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh suat dung phuong dan ((((toan tai) OR (toan tap))) or (toan ban))*.