Perhaps you should try some spelling variations:
nghiep nganh » nghiep thanh, nghiep ninh, nghiep anh
nhung hong » nhung chong, nhung huong, nhung phong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
hong van » hoang van, thong van, phong van
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
sinh va » sinh vat, tinh va, dinh van

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 manh) or (nghiep nganh)) - hanh sinh va nhung hong van ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (nghiep nganh)) - hanh sinh va nhung hong van ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (nghiep nganh)) - hanh sinh va nhung hong van ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (nghiep nganh)) - hanh sinh va nhung hong van ((toan cau) OR (toan ban))*.