Perhaps you should try some spelling variations:
phan xuong » phan cong
thuat tach » thuat sach, thuat mach, thuat tac
xuong cong » luong cong, duong cong, cuong cong
thuat san » thuat toan, thuat song, thuat lanh
hanh dung » thanh dung, anh dung, hanh dong
dung phan » dung nhan, dung luan, dung ha
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
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: hoc ((thuat tach) or (thuat san)) - hanh dung phan xuong cong tan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thuat tach) OR (thuat san)) - hanh dung phan xuong cong tan phan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thuat tach) or (thuat san)) - hanh dung phan xuong cong tan phan tap*.