Perhaps you should try some spelling variations:
thieu nien » thien nhien
hieu hien » bieu hien, dieu hien, chieu chien
dang hanh » dang thanh, ban hanh, dang van
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
cac cao » cac co, ca cao, bac cao
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
cua te » cua tu

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 ky) OR (sac ky)) nang xa hoi. ((thieu nien) or (hieu hien)) cac cao dang hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. ((thieu nien) OR (hieu hien)) cac cao dang hanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang xa hoi. ((thieu nien) or (hieu hien)) cac cao dang hanh vi cua te*".