Perhaps you should try some spelling variations:
luat ngan » cua ngan, luat dan
sach tham » sach nha
cau tren » cu tren, dau tren, ca tren
cau luat » cap luat, cac luat, cuu luat
hang vi » hang va, hang di, khang voi
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cau » ke cau, va cau, ve 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 ty) or (sach tham)) nang xa hoi. hieu ve cau luat ngan ((hang vi) or (hanh vi)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tham)) nang xa hoi. hieu ve cau luat ngan ((hang vi) OR (hanh vi)) cau tren.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tham)) nang xa hoi. hieu ve cau luat ngan ((hang vi) or (hanh vi)) cau tren*.