Perhaps you should try some spelling variations:
ngang toan » nganh toan, dang toan, quang toan
cong ngang » cong nhan, cong quang, cong lang
kieu tinh » lieu tinh, trieu tinh, diep tinh
doanh cua » doanh luan
tong cong » trong cong, cong cong, dung cong
doc kieu » doc hieu, cac kieu, doc viet
manh cua » ban cua
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc kieu tinh - hanh ((manh cua) OR (doanh cua)) tong cong ngang toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc kieu tinh - hanh ((manh cua) OR (doanh cua)) tong cong ngang toan ban".
• Adding a wildcard symbol may retrieve word variants: doc kieu tinh - hanh ((manh cua) OR (doanh cua)) tong cong ngang toan ban*.