Perhaps you should try some spelling variations:
dung chung » dung cong, dung ung, dung trung
chiet tach » chieu sach
hoc chiet » hoc thiet, hoc nhiet, hoc hien
manh hung » anh huong
chung anh » hung anh, phuong anh, khuong anh
hung ap » hung dao, hung anh, hung dai
ap dung » xay dung, van dung

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 hung ap dung chung anh ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - manh hung ap dung chung anh ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - manh hung ap dung chung anh ((toan ban) or (van ban))*.