Perhaps you should try some spelling variations:
van nhan » van phan, van thanh, danh nhan
loai cay » loai may, loai nam, loai va
tu sach » thu sach, su sach, te sach
ty nang » ty xang, ty hang, ly nang
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
tuc van » thuc van, truc van, tuc va
loai ca » loai cua, loai va, loi ca
ve cac » va 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: tu sach ((ty nang) or (ky nang)) xa hoi. hieu ve cac tuc van nhan ((loai ca) or (loai cay)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ky nang)) xa hoi. hieu ve cac tuc van nhan ((loai ca) OR (loai cay)) tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ky nang)) xa hoi. hieu ve cac tuc van nhan ((loai ca) or (loai cay)) tren*.