Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, nhung don
hanh dinh » thanh dinh, hinh dinh, hanh tinh
hang cong » dang cong, hang nong, bang cong
vinh toan » tinh toan, hinh toan, minh toan
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: hoc hien nhanh - ((hanh chinh) or (hanh dinh)) vat ((nhung cong) OR (hang cong)) vinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((hanh chinh) OR (hanh dinh)) vat ((nhung cong) OR (hang cong)) vinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - ((hanh chinh) or (hanh dinh)) vat ((nhung cong) OR (hang cong)) vinh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((hanh chinh) or (hanh dinh)) vat ((nhung cong) OR (hang cong)) vinh toan cau*.