Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chiet tach » chieu sach
chieu xanh » chieu sach, chieu sang, chieu tinh
cua thuong » cua truong, cua phuong, ca thuong
lanh dung » anh dung, manh dung, hanh dung
lan dung » van dung, dan dung, lan hung
cong tap » cuong tap, cong tac, cong tan
tap van » tap va, tap vat, tap quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (chieu xanh)) - ((lanh dung) OR (lan dung)) cua thuong cong tap van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (chieu xanh)) - ((lanh dung) OR (lan dung)) cua thuong cong tap van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chiet tach) or (chieu xanh)) - ((lanh dung) OR (lan dung)) cua thuong cong tap van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (chieu xanh)) - ((lanh dung) OR (lan dung)) cua thuong cong tap van ban*.