Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
cong huong » cong thuong, cong luong, cong hung
huong dang » huong dan, duong dang, huong dong
dang khan » dang khanh, dang khai, dang thanh
thieu ca » thieu cac, thieu cua, hieu ca
khan cap » khan ap, than cap, khoan cam

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)) cong huong dang khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu ca - thanh ((phuong cham) OR (phung van)) cong huong dang khan cap*.