Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
chat khong » chat chong, chat phong, cat khong
khong cong » thong cong, khong cang, chong cong
kieu tinh » diep tinh, bien tinh, dien tinh
lieu tinh » diep tinh, bien tinh
cong tac » cong ty
tac van » tac vang, cac van, tac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((((kieu tinh) OR (trieu tinh))) or (lieu tinh)) - nhanh tinh chat khong cong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((((kieu tinh) OR (trieu tinh))) OR (lieu tinh)) - nhanh tinh chat khong cong tac van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((((kieu tinh) OR (trieu tinh))) or (lieu tinh)) - nhanh tinh chat khong cong tac van ban".
• Adding a wildcard symbol may retrieve word variants: doi ((((kieu tinh) OR (trieu tinh))) or (lieu tinh)) - nhanh tinh chat khong cong tac van ban*.