Perhaps you should try some spelling variations:
nhung chong » nhung phong, nhung phuong, phong chong
thiet danh » thien danh, thien anh, thien dang
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
ban quan » van quan
van tai » von tai, van tuan
tai ban » tai san, tai ngan, tai benh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet danh - hanh ((ban cua) or (ban quan)) ((nhung chong) or (nhung cong)) van tai ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - hanh ((ban cua) OR (ban quan)) ((nhung chong) OR (nhung cong)) van tai ban.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - hanh ((ban cua) or (ban quan)) ((nhung chong) or (nhung cong)) van tai ban*.