Perhaps you should try some spelling variations:
luc nhanh » luc nganh, luc canh, luc nhat
luc nhan » luc nhat, cu nhan, tue nhan
tu sach » thu sach, su sach, te sach
hang vi » hanh vi, hang di, khang voi
sach ty » sach y, sach tu, sach thu
la tren » loai tren, dua tren, dat tren
hieu ve » hieu va, hieu van
xang xa » lang xa, mang xa, ang xa
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 xang xa hoi. hieu ve cau ((luc nhan) or (luc nhanh)) ((hang vi) or (hang va)) la tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. hieu ve cau ((luc nhan) OR (luc nhanh)) ((hang vi) OR (hang va)) la tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. hieu ve cau ((luc nhan) or (luc nhanh)) ((hang vi) or (hang va)) la tren*.