Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thieu » toc thieu, hoc hien
cuong tap » luong tap, luong tai, cong tan
trang va » tran van, hang va
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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 ((cuong tap) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh trang va nhung ((cuong tap) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh trang va nhung ((cuong tap) or (cong tac)) toan cau*.