Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
hanh tai » thanh tai, hang tai, han tai
va hanh » van hanh, va thanh, va danh
cac tuc » cac toc, cac tu, cac tac
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
tang ma » tang van
nang ma » sang ma, nang cao
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach y ((mang may) or (((nang ma) or (tang ma)))) hoi. hieu ve cac tuc va hanh tai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach y ((mang may) OR (((nang ma) OR (tang ma)))) hoi. hieu ve cac tuc va hanh tai cua vat.
• Adding a wildcard symbol may retrieve word variants: nuoc sach y ((mang may) or (((nang ma) or (tang ma)))) hoi. hieu ve cac tuc va hanh tai cua vat*.