Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh sang » thanh san, thanh hang, thanh hoang
thong cong » trong cong, tong cong, thong thong
hien hanh » dieu hanh
cua thong » cua thuong, cua khong, cua tong
hanh san » thanh san, khach san, thanh son
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 ((chieu tinh) or (hien hanh)) - ((thanh sang) or (hanh san)) cua thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (hien hanh)) - ((thanh sang) OR (hanh san)) cua thong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (hien hanh)) - ((thanh sang) or (hanh san)) cua thong cong dan toan cao*.