Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
phan xuong » phan cong
dung thang » hung thang, cung thang, dung thuong
hoc thien » hoc hien, hoc thieu, hoc thiet
manh dung » manh hung, manh tung, anh dung
dung phan » dung nhan, dung luan, dung ha
dung toan » dung doanh, dung thanh, 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: hoc thien thanh - manh dung phan xuong ((dung toan) or (dung thang)) phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - manh dung phan xuong ((dung toan) OR (dung thang)) phan lap.
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - manh dung phan xuong ((dung toan) or (dung thang)) phan lap*.