Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trang va » tran van, hang va
cong san » cong tac
toan cau » toan cao, toan tap
toan tai » toan tap, doanh tai, toan cao
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 trang va nhung cong san ((((toan cau) OR (toan tai))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh trang va nhung cong san ((((toan cau) OR (toan tai))) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - hanh trang va nhung cong san ((((toan cau) OR (toan tai))) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh trang va nhung cong san ((((toan cau) OR (toan tai))) or (toan ban))*.