Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
nhanh lang » nhanh quang, nhan dang, nhanh dong
tieu sang » chieu sang, tieu dung, tiem nang
ha nhung » hoa nhung, hay nhung, pha nhung
cong van » cong vang, song van, cong tan
cong san » cong tac
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 tieu sang - ((nhanh lang) OR (nhanh thang)) ha nhung ((cong van) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sang - ((nhanh lang) OR (nhanh thang)) ha nhung ((cong van) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sang - ((nhanh lang) OR (nhanh thang)) ha nhung ((cong van) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - ((nhanh lang) OR (nhanh thang)) ha nhung ((cong van) or (cong san)) toan cao*.