Perhaps you should try some spelling variations:
thu nang » thi nang, thu hang, thu bang
thai cua » than cua, tai cuc, tri cua
sach thu » sach thue, sach thieu, sach tham
so sach » so sanh, bo sach, co sach
hai cua » dai cua, hoi cua, lai cua
chuc va » thuc va
ke phan » ve phan, kenh phan, ke thang
hieu ke » hieu kem, chieu ke, hieu ky
nang xa » nang x, lang xa, nang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu nang xa hoi. hieu ke phan ((chuc va) or (thuc vat)) hanh ((hai cua) OR (thai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu nang xa hoi. hieu ke phan ((chuc va) OR (thuc vat)) hanh ((hai cua) OR (thai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu nang xa hoi. hieu ke phan ((chuc va) or (thuc vat)) hanh ((hai cua) OR (thai cua)) te".
• Adding a wildcard symbol may retrieve word variants: so sach thu nang xa hoi. hieu ke phan ((chuc va) or (thuc vat)) hanh ((hai cua) OR (thai cua)) te*.