Perhaps you should try some spelling variations:
thuat trinh » thuyet trinh, thuat trong, thuat kinh
thuat tinh » thuat kinh, thuat hinh, thuat dinh
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
chua tinh » cua tinh, cha tinh, chua benh
anh dung » anh dong, anh huong, sach dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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: ho ((chua tinh) or (((thuat tinh) OR (thuat trinh)))) - anh dung luan nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chua tinh) OR (((thuat tinh) OR (thuat trinh)))) - anh dung luan nhung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chua tinh) or (((thuat tinh) OR (thuat trinh)))) - anh dung luan nhung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chua tinh) or (((thuat tinh) OR (thuat trinh)))) - anh dung luan nhung cong tac toan ban*.