Perhaps you should try some spelling variations:
hanh toan » thanh toan, khanh toan, manh toan
toan cau » toan cao, toan ban, toan tap
ban hanh » ban hang
cam duc » cam xuc, cao duc, nam duoc
cau tre » cau tren, cau treo, cau tra
sach ky » sach y, sach ty, sach kem
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky

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 ky) OR (sac ky)) nang xa hoi. hieu ve ((cam duc) or (pham duc)) ban hanh toan cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu ve ((cam duc) OR (pham duc)) ban hanh toan cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang xa hoi. hieu ve ((cam duc) or (pham duc)) ban hanh toan cau tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu ve ((cam duc) or (pham duc)) ban hanh toan cau tre*.