Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh mang » nhanh mang, hanh trang, nhanh lang
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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

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