Perhaps you should try some spelling variations:
hoang cong » hang cong, hoang long, hoang vuong
chua tinh » cua tinh, cha tinh, thuat tinh
trong van » trong cac
chu tinh » chau tinh, cuu tinh, chu tich
tram van » tran van, tam van, trang van
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((chu tinh) OR (chua tinh)) - hanh ((tram van) or (trong van)) hoang cong tac phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((chu tinh) OR (chua tinh)) - hanh ((tram van) OR (trong van)) hoang cong tac phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((chu tinh) OR (chua tinh)) - hanh ((tram van) or (trong van)) hoang cong tac phan tap".
• Adding a wildcard symbol may retrieve word variants: hoi ((chu tinh) OR (chua tinh)) - hanh ((tram van) or (trong van)) hoang cong tac phan tap*.