Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
thien anh » thien danh, tien anh, thien chanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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 (((thien anh) OR (thien thanh)))) - canh tranh cua thong thong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (((thien anh) OR (thien thanh)))) - canh tranh cua thong thong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (((thien anh) OR (thien thanh)))) - canh tranh cua thong thong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (((thien anh) OR (thien thanh)))) - canh tranh cua thong thong dan phan cau*.