Perhaps you should try some spelling variations:
thanh via » thanh va, thanh vien, thanh vinh
van thanh » ban thanh, van tuan
via cua » gia cua, gian cua, giau cua
sach ky » sac ky, sach y, sach kem
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
lo van » le van, vo van, so van
ve cac » vien cac

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

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