Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh thuc
hanh trinh » canh tranh, hanh chinh
thuat dung » thuat hung, thuat ung, thuat xung
dung cong » dung trong
khi sinh » thi sinh, khoe sinh, phai sinh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
ki sinh » vi sinh, ky sinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((khi sinh) OR (ki sinh)) - hanh trinh thuat dung cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((khi sinh) OR (ki sinh)) - hanh trinh thuat dung cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((khi sinh) OR (ki sinh)) - hanh trinh thuat dung cong dan toan cau*.