Perhaps you should try some spelling variations:
su triet » su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cuu san » cua san, cuu ban, cuu nang
su viet » so viet
va hoi » xa hoi, va hoc, va hoa

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 ly hang va hoi. hieu ve cham ((cuu van) or (cuu san)) hanh vi ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly hang va hoi. hieu ve cham ((cuu van) OR (cuu san)) hanh vi ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ly hang va hoi. hieu ve cham ((cuu van) or (cuu san)) hanh vi ((su triet) or (su viet))*.