Perhaps you should try some spelling variations:
thieu nien » thien nhien
doanh van » doan van, doanh va, doanh ban
hieu vien » hieu hien, hieu viec, hieu tieng
va doanh » van doanh, vay doanh, va danh
van cua » vang cua, ban cua, dan cua
cach tu » cach thuc
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach kem
dang xa » dang xay, lang xa, dang ha
sac ky » cac ky, sai ky

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