Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tang » hanh trang, anh tang, hanh mang
chu manh » ho manh, chu han, thu minh
cong san » cong tac
toan tap » toan ban
toan cao » toan ban
chu van » cuu van, chu han
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu manh) OR (chu van)) - hanh tang va nhung cong san ((toan tap) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu manh) OR (chu van)) - hanh tang va nhung cong san ((toan tap) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo ((chu manh) OR (chu van)) - hanh tang va nhung cong san ((toan tap) OR (toan cao))*.