Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
hanh manh » hanh mang, lanh manh, hoang manh
cua thong » cua thuong, cua khong, cua tong
cong tinh » cong trinh, cong vinh, long tinh
manh cua » doanh cua, ban cua
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - hanh manh cua thong cong tinh ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - hanh manh cua thong cong tinh ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh manh cua thong cong tinh ((toan cau) or (toan ban))*.