Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau tren » cu tren, dau tren, ca tren
thanh de » hanh de, thanh ve, thanh do
sach ly » sach y, sach lo, sach ty
cuu tre » cua tre, cau treo
te sach » toc sach
cam cuc » cham cuu, pham cuc
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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

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