Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhanh mang » nhanh lang, hanh mang, nhanh quang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
mang cua » manh cua, dung cua, ban cua
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 - nhanh mang cua ((nhung cong) or (trong cong)) dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - nhanh mang cua ((nhung cong) OR (trong cong)) dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - nhanh mang cua ((nhung cong) or (trong cong)) dan ((toan cau) or (toan ban))*.