Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap
tinh va » trinh van, trinh vat, tinh gia

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 ((tinh va) OR (tich va)) thong cong tan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((tinh va) OR (tich va)) thong cong tan than cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((tinh va) OR (tich va)) thong cong tan than cau*.