Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
sach ky » sach y, sach ty, sach kem
cua tre » cua te, cua triet, dua tren
cac duc » cac du, cao duc, cac dac
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) or (sac ky)) nang xa hoi. hieu ve cac duc va thanh di ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) nang xa hoi. hieu ve cac duc va thanh di ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sac ky)) nang xa hoi. hieu ve cac duc va thanh di ((cua tre) or (cuu tre))*.