Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
tu sach » thu sach, su sach, te sach
hanh va » hang va
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
van cam » van nam, van lam, van cau
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
loc va » hoc va, luc va

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. thi van cam ((loc va) or (thuc dan)) ((hanh va) or (hanh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. thi van cam ((loc va) OR (thuc dan)) ((hanh va) OR (hanh vi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. thi van cam ((loc va) or (thuc dan)) ((hanh va) or (hanh vi)) cuu tre*.