Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, hien hanh
trung vap » trung cap, trung va, trung van
vap thong » va thong, van thong, phap thong
cong dan » cong san, cong tan, huong dan
dan cach » dan cac, dan canh, nhan cach
cach cau » bach cau, cac cau, cach tu

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 manh) OR (dieu hanh)) - thanh trung vap thong cong dan cach cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) OR (dieu hanh)) - thanh trung vap thong cong dan cach cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) OR (dieu hanh)) - thanh trung vap thong cong dan cach cau*.