Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong sang » cong san, cong lang, cong vang
sang than » cang thang, dang thanh, sang tao
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - thanh ((trung cua) or (trung cap)) khong cong sang than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh ((trung cua) OR (trung cap)) khong cong sang than cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh ((trung cua) or (trung cap)) khong cong sang than cau*.