Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
dung cong » dung trong
chu tinh » chau tinh, chua tinh, cuu tinh
trung ha » trung hoc, trung cap
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau
ho chu » hoi chu, cho chu, ho chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chu tinh - hanh ((trung tam) or (trung ha)) ((thong cong) or (dung cong)) dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chu tinh - hanh ((trung tam) OR (trung ha)) ((thong cong) OR (dung cong)) dan can cau.
• Adding a wildcard symbol may retrieve word variants: ho chu tinh - hanh ((trung tam) or (trung ha)) ((thong cong) or (dung cong)) dan can cau*.