Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hanh vai » hanh vi, hanh va, hanh tai
sach dao » lanh dao
sach moi » sach doi, sach hoi, bach mai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac luc » cau luc, coc luc, cac cuoc
lang xa » lang ha, dang xay, lang van
cua te » cua tu

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 moi) or (sach dao)) lang xa hoi. hieu qua ((cac luc) OR (cac nuoc)) va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach moi) OR (sach dao)) lang xa hoi. hieu qua ((cac luc) OR (cac nuoc)) va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach moi) or (sach dao)) lang xa hoi. hieu qua ((cac luc) OR (cac nuoc)) va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach moi) or (sach dao)) lang xa hoi. hieu qua ((cac luc) OR (cac nuoc)) va hanh vai cua te*.