Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
phuong van » phung van, phuong lan, phuong va
phong van » phung van, thong van, phong va
cong sach » ong sach, song sach, duong sach
mang qua » mang cua, mang vua, nang quan
qua dung » quang dung, su dung, qua song

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - cach mang qua dung ((phuong van) OR (phong van)) cong sach~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sach - cach mang qua dung ((phuong van) OR (phong van)) cong sach".
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - cach mang qua dung ((phuong van) OR (phong van)) cong sach*.