Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
nhan xuong » phan xuong, nhan tuong, khac xuong
hoc thieu » toc thieu, hoc hien
manh dung » manh hung, manh tung, anh dung
dung nhan » dung luan
dang toan » dang tran, dan toan, dang thanh
dung toan » dung doanh, dung thang, dung thanh
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 thieu hach - manh dung nhan xuong ((dang toan) or (dung toan)) phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - manh dung nhan xuong ((dang toan) OR (dung toan)) phan tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - manh dung nhan xuong ((dang toan) or (dung toan)) phan tap*.