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