Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
thanh tung » thanh cong
hieu xanh » chieu xanh, dieu hanh, hien hanh
hieu manh » chieu xanh, dieu hanh, hien hanh
dung cong » dung trong
tung cao » nung cao, truong cao, trung cap
cao dung » cao dang, cao dong, cao ung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 xanh) OR (hieu nganh))) or (hieu manh)) - thanh tung cao dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((((hieu xanh) OR (hieu nganh))) OR (hieu manh)) - thanh tung cao dung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((((hieu xanh) OR (hieu nganh))) or (hieu manh)) - thanh tung cao dung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((((hieu xanh) OR (hieu nganh))) or (hieu manh)) - thanh tung cao dung cong tan toan cau*.