Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
lieu tinh » trieu tinh, diep tinh, bien tinh
csinh cua » chinh cua, tinh cua, trinh cua
hang cong » dang cong, hang nong, bang cong
sinh cua » manh cua, dinh cuu, sinh va
toan cao » toan tap
toan ban » van 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 ((sinh cua) or (csinh cua)) hang cong thanh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh ((sinh cua) OR (csinh cua)) hang cong thanh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - hanh ((sinh cua) or (csinh cua)) hang cong thanh ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh ((sinh cua) or (csinh cua)) hang cong thanh ((toan cao) OR (toan ban))*.