Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, chien tranh
hanh huong » thanh huong, anh huong, manh huong
hien hanh » dieu hanh
huong cua » dung cua
cua thong » cua thuong, cua khong, cua tong
cong manh » duong manh, cong thanh, hoang manh
cong danh » cuong danh, cong dan, cong thanh
toan ban » van ban

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 hanh) or (thien thanh)) - hanh huong cua thong ((cong manh) OR (cong danh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (thien thanh)) - hanh huong cua thong ((cong manh) OR (cong danh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hanh) or (thien thanh)) - hanh huong cua thong ((cong manh) OR (cong danh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (thien thanh)) - hanh huong cua thong ((cong manh) OR (cong danh)) toan ban*.