Perhaps you should try some spelling variations:
thuong duong » tuong duong, thuong luong, chuong duong
phuong cham » phuong phap, phuong thao
duong dan » duong dang, huong dan, duong van
thieu ca » thieu cac, thieu cua, hieu ca
dan khan » dan khanh, dan chan, dan than
khan ap » khan cap, han ap, khan dam

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 ca - thanh ((phuong cham) or (phung van)) thuong duong dan khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu ca - thanh ((phuong cham) OR (phung van)) thuong duong dan khan ap*.