Perhaps you should try some spelling variations:
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
duc van » duc tan, duc manh, duc phan
ve cac » va cac, vien cac
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) OR (sach tu)) nang xa hoi. hieu ve cac ((duc van) or (duc va)) hanh vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach tu)) nang xa hoi. hieu ve cac ((duc van) OR (duc va)) hanh vi cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach ty) OR (sach tu)) nang xa hoi. hieu ve cac ((duc van) or (duc va)) hanh vi cua cu".
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) OR (sach tu)) nang xa hoi. hieu ve cac ((duc van) or (duc va)) hanh vi cua cu*.