Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuon sach
thanh tai » thanh hai, thanh toan, doanh tai
thuc dan » thuc hanh, hoc dan, thuc vat
tai cua » thai cua, tai cuc, tri cua
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa
ve cau » ke cau, va cau, ve cac

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) or (cuoc cach)) _ sang ma hoi. hieu ve cau ((tuc va) or (thuc dan)) thanh tai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (cuoc cach)) _ sang ma hoi. hieu ve cau ((tuc va) OR (thuc dan)) thanh tai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (cuoc cach)) _ sang ma hoi. hieu ve cau ((tuc va) or (thuc dan)) thanh tai cua vat*.