Perhaps you should try some spelling variations:
chiet tach » chieu sach
manh trung » manh tung, thanh trung, sinh trung
nhung cong » dung cong, thong cong, hang cong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
manh hung » anh huong
cua nhung » va nhung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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 - ((manh trung) OR (manh hung)) cua nhung cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - ((manh trung) OR (manh hung)) cua nhung cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - ((manh trung) OR (manh hung)) cua nhung cong san toan cao*.