Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (hoc thieu)) sach - anh ((tang cua) or (mang cua)) nhung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) sach - anh ((tang cua) OR (mang cua)) nhung cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc thieu)) sach - anh ((tang cua) or (mang cua)) nhung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc thieu)) sach - anh ((tang cua) or (mang cua)) nhung cong dan than cao*.