Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
thanh de » hanh de, thanh ve, thanh do
chat xuc » chat huu, chao xu, chat cua
hoa nang » hoa lang, hoi nang, chua nang
ho nang » thi nang, kha nang, cao nang
tu sach » thu sach, su sach, te sach
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) OR (ho nang)) xa hoi. hieu van ((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) OR (ho nang)) xa hoi. hieu van ((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) OR (ho nang)) xa hoi. hieu van ((chat xuc) or (cam xuc)) ban thanh de cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ((hoa nang) OR (ho nang)) xa hoi. hieu van ((chat xuc) or (cam xuc)) ban thanh de cau tren*.