Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
thien anh » thien danh, tien anh, thien thanh
doanh cua » doanh luan
manh cua » ban cua
cong tac » cong ty
phan cac » phan dau, phan lap, phan 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 thien anh - canh ((manh cua) or (doanh cua)) nhung cong tac ((phan cac) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien anh - canh ((manh cua) OR (doanh cua)) nhung cong tac ((phan cac) OR (nhan cach)).
• Adding a wildcard symbol may retrieve word variants: hoc thien anh - canh ((manh cua) or (doanh cua)) nhung cong tac ((phan cac) or (nhan cach))*.