Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
hach toan » thanh toan, manh toan
tac toan » tap toan, tam toan, tich toan

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 sach - ((hanh manh) OR (lanh manh)) cua nhung cong ((tac toan) or (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh manh) OR (lanh manh)) cua nhung cong ((tac toan) OR (hach toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((hanh manh) OR (lanh manh)) cua nhung cong ((tac toan) or (hach toan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh manh) OR (lanh manh)) cua nhung cong ((tac toan) or (hach toan)) cau*.