Perhaps you should try some spelling variations:
trinh chat » tinh chat, trinh han, trinh phan
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
hoc vien » hoc hien, hoc tieng, hoc vi
hoc viet » hoc hien
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: ((hoc vien) or (hoc viet)) nganh - hanh ((trinh chat) OR (trinh luat)) dung cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc vien) OR (hoc viet)) nganh - hanh ((trinh chat) OR (trinh luat)) dung cong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc vien) or (hoc viet)) nganh - hanh ((trinh chat) OR (trinh luat)) dung cong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc vien) or (hoc viet)) nganh - hanh ((trinh chat) OR (trinh luat)) dung cong manh toan cau*.