Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
cau tren » cu tren, dau tren, ca tren
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
toc gia » toc giay, tac gia, quoc gia
so giao » so giai, hoc giao
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. hieu va cham ((toc gia) or (so giao)) thanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu va cham ((toc gia) OR (so giao)) thanh di cau tren.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu va cham ((toc gia) or (so giao)) thanh di cau tren*.