Perhaps you should try some spelling variations:
thieu tinh » chieu tinh, thien tinh, lieu tinh
trinh hoac » trinh hoa, trinh han, trinh toan
trinh hoan » trinh han, trinh hoa, trinh toan
khong cong » thong cong, khong cang, chong cong
lang thanh » dang thanh, tang thanh, lang thang
cong lang » cong vang, cong luong, cong quang
thanh cao » thanh ca, thanh cac, thanh thao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) or (trieu tinh)) - hanh ((trinh hoac) OR (trinh hoan)) khong cong lang thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (trieu tinh)) - hanh ((trinh hoac) OR (trinh hoan)) khong cong lang thanh cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) or (trieu tinh)) - hanh ((trinh hoac) OR (trinh hoan)) khong cong lang thanh cao*".