Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cong cong » cong dong, trong cong, dung cong
thong te » thong ke, thong tu, thong le
cong tac » cong ty
tac hanh » tac thanh, tac danh, sac hanh
hanh cac » hang cac, hanh cat, nhanh cay
te cong » tai cong, thi cong, thu cong

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 sach) OR (chieu sang)) - thanh thong te cong cong tac hanh cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - thanh thong te cong cong tac hanh cac".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - thanh thong te cong cong tac hanh cac*.