Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trong » hanh trang, anh trong, hinh trong
nhung cong » dung cong, thong cong, hang cong
trong dai » truong dai, trong doi, trong dam
dai nhung » ai nhung, dai khung, dap nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - hanh trong dai nhung cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh trong dai nhung cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh trong dai nhung cong san ((toan cau) or (toan ban))*.