Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hieu vien » hieu viec, thieu nien, hieu tieng
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
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: su sach ky lang xa hoi. ((hieu vien) or (hieu hien)) cac vi van ((hanh vai) OR (hanh tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. ((hieu vien) OR (hieu hien)) cac vi van ((hanh vai) OR (hanh tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang xa hoi. ((hieu vien) or (hieu hien)) cac vi van ((hanh vai) OR (hanh tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. ((hieu vien) or (hieu hien)) cac vi van ((hanh vai) OR (hanh tai)) cua te*.