Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, lieu tinh
thien tinh » khien tinh, thien minh, tien tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
trinh quan » tinh quang, trinh luat, trinh han
cua thong » cua thuong, cua khong, suat thong
cua tong » cua cong, cua dong, cua nong
quan cao » quang cao, quan cau, quan ao

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

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