Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, thong thong
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
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 quan ((thong cong) or (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 quan ((thong cong) OR (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 quan ((thong cong) or (dung cong)) tan ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh trinh quan ((thong cong) or (dung cong)) tan ((toan cau) OR (toan tap))*.