Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
hanh tai » thanh tai, hang tai, han tai
sach ty » sach y, sach tu, sach thu
hang xa » hoang xa, hang va, hang ca
hieu ve » hieu va, hieu van
cac toc » cac toi, cac nuoc, cac thoi
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
ve cac » va cac, vien cac
toc va » hoc va, toc ta, tuc va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach hay) or (sach ty)) hang xa hoi. hieu ve cac toc va hanh tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach hay) OR (sach ty)) hang xa hoi. hieu ve cac toc va hanh tai cua tu.
• Adding a wildcard symbol may retrieve word variants: thuat ((sach hay) or (sach ty)) hang xa hoi. hieu ve cac toc va hanh tai cua tu*.