Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
thuoc sac » thuoc sach, thuoc dac, thuoc sai
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sac ky nang xa hoi. ((hieu ve) or (hieu va)) pham duc va thanh dat ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky nang xa hoi. ((hieu ve) OR (hieu va)) pham duc va thanh dat ((cua te) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sac ky nang xa hoi. ((hieu ve) or (hieu va)) pham duc va thanh dat ((cua te) OR (cua tu))*".