Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh cua » tinh cua, trinh luat, trinh luan
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
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 quan)) dung cong tan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh ((trinh cua) OR (trinh quan)) dung cong tan ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - hanh ((trinh cua) OR (trinh quan)) dung cong tan ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh ((trinh cua) OR (trinh quan)) dung cong tan ((toan cau) or (toan tap))*.