Perhaps you should try some spelling variations:
trinh chat » tinh chat, trinh luat, trinh han
quyen tap » tuyen tap, luyen tap, quyen cap
cong cong » cong dong, trong cong, dung cong
thuc cua » hoc cua, thuc va
tap cho » tap co, cap cho, tap chi
te cong » tai cong, thi cong, thu cong
ve ky » va ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: quyen tap ((((tap cho) or (trinh chat))) or (thuc cua)) đe co ban ((ve ky) OR (ke ky)) te cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tap ((((tap cho) OR (trinh chat))) OR (thuc cua)) đe co ban ((ve ky) OR (ke ky)) te cong cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "quyen tap ((((tap cho) or (trinh chat))) or (thuc cua)) đe co ban ((ve ky) OR (ke ky)) te cong cong".
• Adding a wildcard symbol may retrieve word variants: quyen tap ((((tap cho) or (trinh chat))) or (thuc cua)) đe co ban ((ve ky) OR (ke ky)) te cong cong*.