Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
hang di » hang doi, hang vi, hang dien
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van
y lang » o lang, _ lang, tay lang
tuc va » truc va, tuc xa, duc va
di va » dai va, di vao, doi va
thiet* » thieu*

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 y lang xa hoi. ((hieu ve) or (hieu van)) cac ((tuc va) OR (thuc va)) hang di va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. ((hieu ve) OR (hieu van)) cac ((tuc va) OR (thuc va)) hang di va thiet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y lang xa hoi. ((hieu ve) or (hieu van)) cac ((tuc va) OR (thuc va)) hang di va thiet*".