Perhaps you should try some spelling variations:
thanh gia » thanh gian, thanh giang, thanh nghia
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
vien cac » vien bach, vien dai, vien da
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
ve cac » va cac
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: thu sach ty nang xa hoi. hieu ((ve cac) or (vien cac)) le van thanh gia ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. hieu ((ve cac) OR (vien cac)) le van thanh gia ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. hieu ((ve cac) or (vien cac)) le van thanh gia ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. hieu ((ve cac) or (vien cac)) le van thanh gia ((cua te) OR (cua tu))*.