Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chiet tach » chieu sach
chieu tinh » trieu tinh, lieu tinh, chau tinh
cua thuong » cua truong, cua phuong, ca thuong
lanh dung » anh dung, manh dung, lan dung
dung cua » dung luan, dung cho
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 tinh)) - lanh 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 tinh)) - lanh dung cua thuong cong tap van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (chieu tinh)) - lanh dung cua thuong cong tap van ban*.