Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thien danh » thien anh, thien dang, thien chanh
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
cong dan » cong san, cong tan, huong dan
nhan tai » hang tai, van tai, toan tai
toan tap » toan 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 ((thien thanh) or (thien danh)) - canh tranh cua trong cong dan ((nhan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (thien danh)) - canh tranh cua trong cong dan ((nhan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (thien danh)) - canh tranh cua trong cong dan ((nhan tai) or (toan tap))*.