Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
tranh vat » tranh va, tranh van, tran van
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
dan than » dan chan, ban than, van than
van tan » van tuan, van ban, van tai

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 - canh ((tranh vat) OR (trinh vat)) dung cong ((van tan) or (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh ((tranh vat) OR (trinh vat)) dung cong ((van tan) OR (dan than)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - canh ((tranh vat) OR (trinh vat)) dung cong ((van tan) or (dan than)) tap*".