Perhaps you should try some spelling variations:
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
cap nhung » cam nhung, vap nhung, dap nhung
cong cap » cung cap, cong cau, cong cac
cong tan » cong tac, cong san, cong thanh
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: toc ((thieu sach) OR (chieu sach)) - thanh cong cap nhung ((cong dong) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu sach) OR (chieu sach)) - thanh cong cap nhung ((cong dong) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu sach) OR (chieu sach)) - thanh cong cap nhung ((cong dong) or (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu sach) OR (chieu sach)) - thanh cong cap nhung ((cong dong) or (cong tan)) toan cau*.