Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cau loc » hau loc, cau hoc, cau luc
xu tren » tu tren, cu tren, xa tren
loc va » hoc va, luc va
vi xu » va xu, ve xu, vi su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang x) OR (lang xa)) hoi. ((hieu van) OR (hieu va)) cau loc va thanh vi xu tren~.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang x) or (lang xa)) hoi. ((hieu van) or (hieu va)) cau loc va thanh vi xu tren*.