Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
tang luan » dung luan
trinh ban » trinh han, trinh san, trinh dan
theo chu » theo chieu, cho chu, chao chu
chu sang » chu bang, thu sang, chieu sang
tang cua » mang cua, hang cua, thong cua
ban cau » bang cau, ban can, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sang - hanh ((tang cua) or (tang luan)) khong cong trinh ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sang - hanh ((tang cua) OR (tang luan)) khong cong trinh ban cau.
• Adding a wildcard symbol may retrieve word variants: theo chu sang - hanh ((tang cua) or (tang luan)) khong cong trinh ban cau*.