Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
xanh tai » hanh tai, anh tai, vanh tai
danh di » danh du, xanh di, danh dien
te sach » toc sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
cac tuc » cac toc, cac tu, cac tac
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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: te sach y ((nang x) OR (nang ma)) hoi. hieu ve cac tuc va ((danh di) OR (xanh tai)) cau tren~.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (nang ma)) hoi. hieu ve cac tuc va ((danh di) or (xanh tai)) cau tren*.