Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhanh thanh » phan thanh, nhanh tinh
trinh quan » tinh quang, trinh luat, trinh han
khong cong » thong cong, khong cang, chong cong
hoc thien » hoc hien, hoc thieu, hoc thiet
trinh cua » tinh cua, trinh luat, trinh luan
ban thanh » ban hanh, ban hang

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

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