Perhaps you should try some spelling variations:
trinh luan » trinh quan, trinh han, trinh toan
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh cua » tinh cua, trinh quan, trinh chat
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - hanh ((((trinh cua) OR (trinh luan))) or (trinh luat)) nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh ((((trinh cua) OR (trinh luan))) OR (trinh luat)) nhung cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - hanh ((((trinh cua) OR (trinh luan))) or (trinh luat)) nhung cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh ((((trinh cua) OR (trinh luan))) or (trinh luat)) nhung cong dan toan cau*.