Perhaps you should try some spelling variations:
tuyen tai » truyen tai, tuyen tap, xuyen tai
cac thuat » va thuat, hoc thuat, cac thu
cong cong » trong cong, dung cong, dang cong
cac chu » cac thu, cac che, cac khu
ban ve » ban va
ky tai » ly tai, ky thi, kg tai
ve ky » va ky, ke ky
dong » dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tai ((cac chu) or (cac thuat)) đe co ban ve ky tai ((cong cong) OR (cong dong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tai ((cac chu) OR (cac thuat)) đe co ban ve ky tai ((cong cong) OR (cong dong)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tai ((cac chu) or (cac thuat)) đe co ban ve ky tai ((cong cong) OR (cong dong))".
• Adding a wildcard symbol may retrieve word variants: tuyen tai ((cac chu) or (cac thuat)) đe co ban ve ky tai ((cong cong) OR (cong dong))*.