Perhaps you should try some spelling variations:
sinh duoc » sinh hoc
truc van » truc va, thuc van, truc ban
dinh duc » ninh duc, tinh duc, dinh chuc
cao truc » cau truc, vao truc, cao thuoc
sach ly » sach y, sach lo, sach ty
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ly lang » ly hang, ly vang, le lang
va cao » va cac, va co, va dao
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 ly lang xa hoi. hieu va cao truc van ((((dinh duc) OR (sinh duoc))) or (minh duc)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly lang xa hoi. hieu va cao truc van ((((dinh duc) OR (sinh duoc))) OR (minh duc)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly lang xa hoi. hieu va cao truc van ((((dinh duc) OR (sinh duoc))) or (minh duc)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ly lang xa hoi. hieu va cao truc van ((((dinh duc) OR (sinh duoc))) or (minh duc)) cua te*.