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
thang cua » thong cua, hang cua, than cua
cong tinh » cong trinh, cong vinh, long tinh
tang cua » mang cua, hang cua, tang luan
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 - hanh ((thang cua) or (tang cua)) nhung cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((thang cua) OR (tang cua)) nhung cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((thang cua) or (tang cua)) nhung cong tinh toan ban*.