Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
minh trang » tinh trang, minh hoang, minh tuan
hoc thieu » toc thieu, hoc hien
trong van » trong cac
tuan ban » tuan bang, luan ban, quang ban
toan ban » van ban
va dung » van dung, va duong, vat dung

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 - ((minh trang) or (canh tranh)) va dung trong van ((tuan ban) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((minh trang) OR (canh tranh)) va dung trong van ((tuan ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((minh trang) or (canh tranh)) va dung trong van ((tuan ban) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((minh trang) or (canh tranh)) va dung trong van ((tuan ban) OR (toan ban))*.