Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
cau tren » cu tren, dau tren, ca tren
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
ky sang » ky nang, ky dang, duy sang
vai cau » va cau, van cau, vai cac
xuc va » duc va, tuc va, luc va
va cam » va cham, va cao, va cai

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 ((ky sang) or (ky tang)) mai hoi. hieu ((va cam) OR (va cac)) xuc va thanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ((ky sang) OR (ky tang)) mai hoi. hieu ((va cam) OR (va cac)) xuc va thanh vai cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ((ky sang) or (ky tang)) mai hoi. hieu ((va cam) OR (va cac)) xuc va thanh vai cau tren*".