Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
nuoc sach » nguoi sach, hoc sach, cuoc cach
ly quang » le quang, vu quang
hanh vai » hanh vi, hanh va, hanh tai
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ((ly hang) OR (ly quang)) xa hoi. hieu ve cham thuc va hanh vai cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ((ly hang) OR (ly quang)) xa hoi. hieu ve cham thuc va hanh vai cua su".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ((ly hang) OR (ly quang)) xa hoi. hieu ve cham thuc va hanh vai cua su*.