Perhaps you should try some spelling variations:
dung thang » hung thang, cung thang, dung thuong
hieu cach » hieu cac, chieu sach, hieu ca
dung phan » dung nhan, dung luan, dung ha
phan cong » thanh cong
toc hieu » toc thieu, doc hieu, hoc thieu
anh dung » anh dong, anh huong, sach dung
dung dat » dung va, dung tai
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu cach - anh dung phan cong ((dung thang) or (dung dat)) phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu cach - anh dung phan cong ((dung thang) OR (dung dat)) phan lap.
• Adding a wildcard symbol may retrieve word variants: toc hieu cach - anh dung phan cong ((dung thang) or (dung dat)) phan lap*.