Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
dan loai » dang loai, phan loai, nhan loai
sach ty » sach y, sach tu, sach thu
cay tre » may tre, chay tren, cau treo
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, nam thuc, dam thuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cam tu » cam thu, nam tu, dam tu
va dan » ca dan, va dao, va dau

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 xa hoi. hieu ve ((cam tuc) or (cam tu)) va dan loai ((cay tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ve ((cam tuc) OR (cam tu)) va dan loai ((cay tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu ve ((cam tuc) or (cam tu)) va dan loai ((cay tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ve ((cam tuc) or (cam tu)) va dan loai ((cay tre) OR (cau tren))*.