Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu manh » chieu xanh, hieu nganh, dieu hanh
huong cua » dung cua
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (hieu quang)) - anh huong cua bang cong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu quang)) - anh huong cua bang cong van tuan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu quang)) - anh huong cua bang cong van tuan ban*.