Perhaps you should try some spelling variations:
hanh noi » ha noi, hanh vi, nang noi
hanh doi » thanh doi, hang doi, hanh moi
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
van cam » van nam, van lam, van cau
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
o van » vo van, so van, do van
cam o » cham o, cam lo, ca o

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang xa) or (lang xa)) hoi. hieu van cam o van ((hanh doi) OR (hanh noi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (lang xa)) hoi. hieu van cam o van ((hanh doi) OR (hanh noi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (lang xa)) hoi. hieu van cam o van ((hanh doi) OR (hanh noi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) or (lang xa)) hoi. hieu van cam o van ((hanh doi) OR (hanh noi)) cua tre*.