Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau tren » cu tren, dau tren, ca tren
sach hoa » sach ha, sach hoi, bach hoa
thanh de » hanh de, thanh ve, thanh do
chat xuc » chat huu, chao xu, chat cua
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
de cau » ke cau, le cau, ve cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoa ((nang xa) OR (nang ma)) hoi. hieu ve ((chat xuc) or (cam xuc)) ban thanh de cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoa ((nang xa) OR (nang ma)) hoi. hieu ve ((chat xuc) OR (cam xuc)) ban thanh de cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoa ((nang xa) OR (nang ma)) hoi. hieu ve ((chat xuc) or (cam xuc)) ban thanh de cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach hoa ((nang xa) OR (nang ma)) hoi. hieu ve ((chat xuc) or (cam xuc)) ban thanh de cau tren*.