Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
ban thanh » ban hanh, ban hang
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
cham xuc » chat xuc, cham soc, pham duc
sach cam » sach cap, mach cam, sach tham
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
loi cau » loi ca, hoi cau, loi can
tu sach » thu sach, su sach, te sach

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