Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hanh toan » khanh toan, manh toan, hach toan
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
tap tre » tap tren, tap trac, lap tren

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