Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
trung van » truong van, trung va, trung tuan
trong van » trong cac
van thang » van thanh, van khang, van hang
thang cap » thong cap, than cap, hang ca

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 - hanh ((trung cap) or (trung van)) dung trong van thang cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh ((trung cap) OR (trung van)) dung trong van thang cap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh ((trung cap) or (trung van)) dung trong van thang cap*.