Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trung » thanh trung, hanh trang, manh trung
hieu manh » chieu xanh, hieu nganh, hieu van
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: hoc ((((hieu manh) OR (hien hanh))) or (dieu hanh)) - hanh trung cua thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (hien hanh))) OR (dieu hanh)) - hanh trung cua thong cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hieu manh) OR (hien hanh))) or (dieu hanh)) - hanh trung cua thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) OR (hien hanh))) or (dieu hanh)) - hanh trung cua thong cong dan toan cao*.