Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
sach nuoc » sach duoc, cac nuoc, bach tuoc
hien sach » dien sach, kien sach, thien hach
hoc sach » hoc sinh, hoc cac, hoc anh
lang ha » long ha
lang xa » dang xay, lang van
dau vai » dau va, dau hai, dau tai
cua cau » cua cac, cua chu, cua cay
va dau » va dao
cua cu » cua chu, cua su, cua co

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y ((lang xa) or (lang ha)) hoi. hieu hien sach nuoc va dau vai ((cua cu) OR (cua cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y ((lang xa) OR (lang ha)) hoi. hieu hien sach nuoc va dau vai ((cua cu) OR (cua cau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y ((lang xa) or (lang ha)) hoi. hieu hien sach nuoc va dau vai ((cua cu) OR (cua cau))*".