Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
cua dung » cua dang, cua dong, qua dung
cong tap » cuong tap, cong tac, tong tap
cong tan » cong tac, cong san, cong thanh

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 - hanh trung cua dung ((cong tap) OR (cong tan)) doanh tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sach - hanh trung cua dung ((cong tap) OR (cong tan)) doanh tai".
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - hanh trung cua dung ((cong tap) OR (cong tan)) doanh tai*.