Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
hanh thang » nhanh thang, thanh thang, hanh trang
thong cong » trong cong, tong cong, thong thong
chua xang » chua nang, chuc nang, chu bang
kha nang » phap nang, ky nang, ki nang
thang va » hang va, trang va, thong va
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) or (kha nang)) - hanh thang va ((nhung cong) OR (thong cong)) san phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (kha nang)) - hanh thang va ((nhung cong) OR (thong cong)) san phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) or (kha nang)) - hanh thang va ((nhung cong) OR (thong cong)) san phan dau".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) or (kha nang)) - hanh thang va ((nhung cong) OR (thong cong)) san phan dau*.