Perhaps you should try some spelling variations:
hien nganh » vien nganh, hien nhanh, hieu nganh
nhung cong » dung cong, thong cong, hang cong
hanh sinh » hanh tinh, hinh sinh, hanh chinh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
vat nhung » va nhung, vap nhung, vai nhung
cong vinh » cong trinh, trong vinh, cong viec
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 nganh - ((hanh sinh) or (hanh dinh)) vat nhung cong vinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nganh - ((hanh sinh) OR (hanh dinh)) vat nhung cong vinh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien nganh - ((hanh sinh) or (hanh dinh)) vat nhung cong vinh toan cau*.