Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
thanh dang » thanh dan, thanh dong, thanh dung
thanh hang » thanh hoang, thanh thang, tranh hang
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
cong san » cong tac
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan 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 xanh) or (hien hanh)) - hanh truong ((thanh dang) OR (thanh hang)) cong san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - hanh truong ((thanh dang) OR (thanh hang)) cong san than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien hanh)) - hanh truong ((thanh dang) OR (thanh hang)) cong san than tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - hanh truong ((thanh dang) OR (thanh hang)) cong san than tap*.