Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
trung pha » trung phan, trung phat, trung ha
cong cong » cong dong, trong cong, dung cong
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
hien anh » thien anh, dien anh, tien anh

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 anh) OR (hien hanh)) - thanh trung pha ((nhung cong) or (cong cong)) van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (hien hanh)) - thanh trung pha ((nhung cong) OR (cong cong)) van thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (hien hanh)) - thanh trung pha ((nhung cong) or (cong cong)) van thanh cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (hien hanh)) - thanh trung pha ((nhung cong) or (cong cong)) van thanh cao*.