Perhaps you should try some spelling variations:
dan doanh » van doanh, san doanh, ban doanh
thuc dan » thuc hanh, hoc dan, thuc vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ve cham » va cham, ve chat, vu cham
va chat » van chat, va phat, cao chat
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu ((ve cham) or (va chat)) thuc dan doanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((ve cham) OR (va chat)) thuc dan doanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((ve cham) or (va chat)) thuc dan doanh tai cuc tre*.