Perhaps you should try some spelling variations:
trinh cua » trinh luat, trinh quan, trinh luan
cong vang » cong lang, cong quang, cong ngang
chi danh » chi dan, chi anh, chi dinh
tinh cua » sinh cua, tinh chat, tranh cua
cong san » cong tac
toan cao » toan ban, toan tap
doi chi » doi khi

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

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