Perhaps you should try some spelling variations:
nhan loai » phan loai, nhan tai
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
ty nang » ty xang, ty hang, ly nang
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
xa nhan » ca nhan, va nhan, xa phan
loai ca » loai cay, loai cua, loai va
ca tren » cau tren, cu tren, la tren

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 van cam tuc xa nhan loai ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ky nang)) xa hoi. hieu van cam tuc xa nhan loai ca tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ky nang)) xa hoi. hieu van cam tuc xa nhan loai ca tren*.