Perhaps you should try some spelling variations:
trinh tinh » trinh tin, trinh dinh, trinh sinh
thong cong » trong cong, tong cong, thong thong
thang cua » thong cua, hang cua, than cua
tranh cua » doanh cua, manh cua
cong dan » cong san, cong tan, huong dan
dan han » dan chan, dan than, dan hanh
han tap » han tai, toan tap, nhan tai

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

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