Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh vinh » thanh binh, thanh tinh, than kinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
cong tap » cuong tap, cong tac, cong tan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan 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 sach - ((thanh vinh) or (lanh manh)) cua nhung cong tap ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((thanh vinh) OR (lanh manh)) cua nhung cong tap ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((thanh vinh) or (lanh manh)) cua nhung cong tap ((toan cau) or (toan cao))*.