Perhaps you should try some spelling variations:
xach tay » canh tay
sinh cau » trinh cau, sinh vat, sinh va
tinh cau » trinh cau, tinh cao, tinh ca
sach thu » sach thue, sach thieu, sach tham
lang mai » lang dai, lang hai, lang man
cac toc » cac toi, cac nuoc, cac thoi
mai hoi » mai khoi, dai hoi, lai hoi
qua cac » cua cac
toc ca » toc cao, toc ta, toc co

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((xach tay) or (sach thu)) lang mai hoi. hieu qua cac toc ca dao ((tinh cau) or (sinh cau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((xach tay) OR (sach thu)) lang mai hoi. hieu qua cac toc ca dao ((tinh cau) OR (sinh cau)) tren.
• Adding a wildcard symbol may retrieve word variants: te ((xach tay) or (sach thu)) lang mai hoi. hieu qua cac toc ca dao ((tinh cau) or (sinh cau)) tren*.