Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
canh sinh » canh tinh, canh binh, tinh sinh
hang cong » dang cong, hang nong, bang cong
sinh van » sinh vat, dinh van, sinh va
van hang » van khang, van hoang, van thang
cong tac » cong ty
tac pham » thuc pham, san pham
pham dau » phan dau, pham dac, pham dat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (hieu lang)) - canh sinh van hang cong tac pham dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu lang)) - canh sinh van hang cong tac pham dau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu lang)) - canh sinh van hang cong tac pham dau*.