Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
hang hang » nang hang, cang thang, hung thang
hang cong » dang cong, hang nong, bang cong
cong san » cong tac
toan tai » toan tap, doanh tai, toan ban
va hang » van hang, va nang, va lang

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 - hang hang va hang cong san ((toan tai) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hang hang va hang cong san ((toan tai) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hang hang va hang cong san ((toan tai) or (van ban))*.