Perhaps you should try some spelling variations:
hien nganh » vien nganh, hieu nganh, trien nganh
hien nhanh » hien hanh, thien thanh, tien thanh
lanh hanh » lanh manh, lenh hanh, xanh hanh
dang cong » dung cong
hanh cam » hanh cham, hanh lam, hanh nam
cam dang » cao dang, cam nang, cac dang
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan 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 ((hien nganh) OR (hien nhanh)) - lanh hanh cam dang cong anh tuan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nganh) OR (hien nhanh)) - lanh hanh cam dang cong anh tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nganh) OR (hien nhanh)) - lanh hanh cam dang cong anh tuan ban*.