Perhaps you should try some spelling variations:
nhung phuong » nhu phuong, truong phuong, bang phuong
dung phuong » dung thuong, bang phuong, dung chung
hanh trinh » canh tranh, hanh chinh
theo chu » theo chieu, cho chu, chao chu
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
chu han » chu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu han - ((nhanh quang) or (hanh trinh)) va ((nhung phuong) OR (dung phuong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu han - ((nhanh quang) OR (hanh trinh)) va ((nhung phuong) OR (dung phuong)) dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu han - ((nhanh quang) or (hanh trinh)) va ((nhung phuong) OR (dung phuong)) dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chu han - ((nhanh quang) or (hanh trinh)) va ((nhung phuong) OR (dung phuong)) dan toan cau*.