Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
phan trong » pham trong, nhan trong, phan thuong
tranh cua » doanh cua, manh cua
phan tong » phan cong, han tong, phan hong
vinh toan » tinh toan, hinh toan, minh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu nganh) or (chieu tinh)) - canh tranh cua ((phan tong) OR (phan trong)) vinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu nganh) OR (chieu tinh)) - canh tranh cua ((phan tong) OR (phan trong)) vinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu nganh) or (chieu tinh)) - canh tranh cua ((phan tong) OR (phan trong)) vinh toan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu nganh) or (chieu tinh)) - canh tranh cua ((phan tong) OR (phan trong)) vinh toan tap*.