Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
kieu tinh » lieu tinh, trieu tinh, diep tinh
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
ho kieu » ho lieu, so kieu, thi 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 kieu tinh - hanh ((trinh cua) or (tinh cua)) thuong cong tan ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho kieu tinh - hanh ((trinh cua) OR (tinh cua)) thuong cong tan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho kieu tinh - hanh ((trinh cua) or (tinh cua)) thuong cong tan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho kieu tinh - hanh ((trinh cua) or (tinh cua)) thuong cong tan ((toan cao) OR (toan ban))*.