Perhaps you should try some spelling variations:
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
ngang toan » nganh toan, quang toan
tranh cap » tranh chap, tranh cac, tranh cai
cap hoang » cam hoang, cau hoang, van hoang
dang toan » dang tran, dan toan, dung toan

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) or (chieu sach)) - canh tranh cap hoang vuong ((ngang toan) OR (dang toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sach)) - canh tranh cap hoang vuong ((ngang toan) OR (dang toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (chieu sach)) - canh tranh cap hoang vuong ((ngang toan) OR (dang toan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sach)) - canh tranh cap hoang vuong ((ngang toan) OR (dang toan)) cao*.