Perhaps you should try some spelling variations:
lanh tranh » canh tranh, lan tranh, hanh trinh
nhung cong » thong cong, hang cong, nhung don
lanh manh » lan anh, van manh, anh anh
dung cong » dung trong
dan chinh » dang chinh, lan chinh, van chinh
chinh cau » chinh chau, chinh ca, chinh can
ho chinh » hoc chinh, cho chinh, hoa chinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chinh sach - ((lanh manh) or (lanh tranh)) va ((nhung cong) OR (dung cong)) dan chinh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chinh sach - ((lanh manh) OR (lanh tranh)) va ((nhung cong) OR (dung cong)) dan chinh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chinh sach - ((lanh manh) or (lanh tranh)) va ((nhung cong) OR (dung cong)) dan chinh cau".
• Adding a wildcard symbol may retrieve word variants: ho chinh sach - ((lanh manh) or (lanh tranh)) va ((nhung cong) OR (dung cong)) dan chinh cau*.