Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
manh toan » thanh toan, anh tuan, tinh toan
anh dung » anh dong, anh huong, sach dung
toan cau » 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: theo ((chuc danh) or (chua xang)) - anh dung va ((nhung cong) OR (thong cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua xang)) - anh dung va ((nhung cong) OR (thong cong)) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chua xang)) - anh dung va ((nhung cong) OR (thong cong)) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - anh dung va ((nhung cong) OR (thong cong)) manh toan cau*.