Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung huong » nhung tuong, nhung cong, nhung dung
hanh trinh » canh tranh, hanh chinh
kieu tinh » lieu tinh, trieu tinh, diep tinh
yeu tinh » yeu tin, lieu tinh, cuu tinh
toan cau » toan cao, toan ban, toan tap

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

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