Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh di » hanh vi, hanh de, hang di
duc gia » quoc gia
dac gia » tac gia, dau gia, dat gia
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach ty » sach tu, sach thu, xach tay
di cau » da cau, diem cau
ve cac » va cac, vien cac

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 y) or (sach ty)) nang xa hoi. hieu ve cac ((dac gia) OR (duc gia)) hanh di cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sach ty)) nang xa hoi. hieu ve cac ((dac gia) OR (duc gia)) hanh di cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach y) or (sach ty)) nang xa hoi. hieu ve cac ((dac gia) OR (duc gia)) hanh di cau treo".
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sach ty)) nang xa hoi. hieu ve cac ((dac gia) OR (duc gia)) hanh di cau treo*.