Perhaps you should try some spelling variations:
giau thanh » gia thanh, gian thanh, giay thanh
thanh va » thanh van, hanh va, thanh ha
sang ky » sang kyo, tang ky, bang ky
dang ky » dang y, dan ky, dong ky
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
so giau » so giai, so giao, so gia
va cua » va chua, via cua, ca cua
cua te » cua tu

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

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