Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
thuoc va » thuc va, thuong va, thuoc tai
thuoc ma » hoc ma, duoc ma
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cua tu » cua tuc, cua su, cua cu
ve nam » he nam, va nam, le nam

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

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