Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
luan truong » xuan truong, luan tuong, quang truong
truong cong » trong cong, truong dong, truong long
thieu sang » chieu sang, thieu quang, hieu lang
cach dung » sach dung, tac dung, anh dung
van tuyen » va tuyen, van chuyen, van nguyen
cong van » cong vang, cong san, song van

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 sang) OR (thieu khang)) - ((cach dung) or (cach mang)) luan truong cong van tuyen tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - ((cach dung) OR (cach mang)) luan truong cong van tuyen tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (thieu khang)) - ((cach dung) or (cach mang)) luan truong cong van tuyen tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (thieu khang)) - ((cach dung) or (cach mang)) luan truong cong van tuyen tap*.