Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
tu sach » thu sach, su sach, te sach
van lam » van nam
hanh va » hang va, hanh vi
sach ty » sach y, sach tu, sach thu
van cam » van nam, van cau, van dam
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
chu tre » cho tre, chu tri, cuu tre
xuc va » duc va, tuc va, luc va
va chu » va che, va cau, va chi

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