Perhaps you should try some spelling variations:
tieu sang » chieu sang, tieu dung, tiem nang
trinh xac » trinh xay, trinh xuan, trinh han
trinh cac » trinh cau, trinh chat, trinh chao
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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 - hanh ((trinh xac) OR (trinh cac)) dung cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sang - hanh ((trinh xac) OR (trinh cac)) dung cong dan toan cau*".