Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
trinh hieu » trinh dieu, trinh nhiet, trinh thien
cho nguoi » cua nguoi
chat thom » chat thai, chat hoa, chat hoc
tieng han » tieng anh
chat cho » chat co, cap cho, cao cho
dat cho » dac cho, day cho, dan cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: giao ((trinh hieu) OR (trinh thiet)) luat dat cho nguoi viet ((chat thom) or (chat cho)) tieng han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao ((trinh hieu) OR (trinh thiet)) luat dat cho nguoi viet ((chat thom) OR (chat cho)) tieng han*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao ((trinh hieu) OR (trinh thiet)) luat dat cho nguoi viet ((chat thom) or (chat cho)) tieng han*".