Perhaps you should try some spelling variations:
sat trong » suat trong, vat trong, dat trong
tham thuc » nham thuc, pham thuc, tam thuc
thuc sat » thuc vat, thuc san, thuc hoat
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve tham » va tham, ve cham, vi tham
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
y nang » ly nang, v nang, may nang
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y nang) or (ky nang)) ((x hoi) or (o hoi)). hieu ve tham thuc sat trong doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ky nang)) ((x hoi) OR (o hoi)). hieu ve tham thuc sat trong doi cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (ky nang)) ((x hoi) or (o hoi)). hieu ve tham thuc sat trong doi cuu tre*.