Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
vat nhung » vap nhung, vai nhung, ve nhung
cong vinh » cong trinh, trong vinh, cong viec
hoc hieu » hoc thieu, hoc hien, doc hieu
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: hoc hieu nganh - hanh sinh ((vat nhung) OR (va nhung)) cong vinh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh sinh ((vat nhung) OR (va nhung)) cong vinh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu nganh - hanh sinh ((vat nhung) OR (va nhung)) cong vinh ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh sinh ((vat nhung) OR (va nhung)) cong vinh ((toan cau) or (toan ban))*.