Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien tinh » thien minh, tien tinh, trien tinh
khien tinh » khien thich, bien tinh, dien tinh
thong cong » trong cong, tong cong, thong thong
trung va » truong va, trang va, trung ha
va thong » va thuong, va phuong, he thong
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 ((thien tinh) OR (khien tinh)) - thanh trung va thong cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien tinh) OR (khien tinh)) - thanh trung va thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien tinh) OR (khien tinh)) - thanh trung va thong cong dan toan cao*.