Perhaps you should try some spelling variations:
thuat tach » thuat mach, thuat tac, thuat thanh
thuat sach » thuat lanh, thuat san
hanh dung » thanh dung, anh dung, hanh dong
dung phan » dung nhan, dung luan, dung ha
phan cong » thanh cong
cong bong » cong dong, cong cong, cong nong
bong toan » cong toan, phong toan, trong toan
toan han » toan phan, toan hanh, toan ban
han tap » han tai, toan tap, nhan tai

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 sach)) - hanh dung phan cong bong toan han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thuat tach) OR (thuat sach)) - hanh dung phan cong bong toan han tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thuat tach) or (thuat sach)) - hanh dung phan cong bong toan han tap*.