Perhaps you should try some spelling variations:
sach bai » sach dao, cac bai, sach xa
van xanh » van anh, van hanh, van manh
xanh doi » xanh di, thanh doi, tinh doi
sach ki » sach kinh, sach kem, sach doi
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac dac » cac dan, cac dai, cac bac
dac van » cac van, dao van, dam van
doi cua » dai cua, hoi cua
ve cac » va cac, vien cac
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ki) or (sach bai)) nang xa hoi. hieu ve cac dac van xanh doi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ki) OR (sach bai)) nang xa hoi. hieu ve cac dac van xanh doi cua cu.
• Adding a wildcard symbol may retrieve word variants: te ((sach ki) or (sach bai)) nang xa hoi. hieu ve cac dac van xanh doi cua cu*.