Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
lanh manh » lanh tranh, lan anh, anh anh
cua thong » cua thuong, cua khong, cua tong
van manh » van minh, van anh, van hanh
cong san » cong tac
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - ((lanh manh) or (van manh)) cua thong cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - ((lanh manh) OR (van manh)) cua thong cong san ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - ((lanh manh) or (van manh)) cua thong cong san ((toan cao) or (toan tap))*.