Perhaps you should try some spelling variations:
khien thich » bien thich, khien tinh, kien trich
thanh trung » thanh tung
thieu tinh » trieu tinh, chieu tinh, thien tinh
thong cong » trong cong, tong cong, thong thong
tam thong » tam thuong, tao thong, nam thong
cong ban » cong bang, cong san, cong tan
ban can » ban dan, ban hang, ban hanh
can cau » van cau, ban cau, ca cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) or (khien thich)) - thanh trung tam thong cong ban can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (khien thich)) - thanh trung tam thong cong ban can cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (khien thich)) - thanh trung tam thong cong ban can cau*.