Perhaps you should try some spelling variations:
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
vi cuu » vi luu, vinh cuu
tuc va » thuc va, truc va, tuc xa
xac va » tac va, ac va, bac va
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
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: su sac ky ((nang xa) or (nang ma)) hoi. hieu ve cac ((xac va) or (tuc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xa) OR (nang ma)) hoi. hieu ve cac ((xac va) OR (tuc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (nang ma)) hoi. hieu ve cac ((xac va) or (tuc va)) hanh vi cuu tre*.