Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
vu sach » vu bach, su sach, vu khach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
cac ban » cac van, can ban, cac bai
lap cua » lai cua, tap cua, lam cua
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y lang xa hoi. hieu va cac ((duc ban) or (((cac ban) OR (cac dan)))) thanh lap cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y lang xa hoi. hieu va cac ((duc ban) OR (((cac ban) OR (cac dan)))) thanh lap cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y lang xa hoi. hieu va cac ((duc ban) or (((cac ban) OR (cac dan)))) thanh lap cua vat".
• Adding a wildcard symbol may retrieve word variants: vu sach y lang xa hoi. hieu va cac ((duc ban) or (((cac ban) OR (cac dan)))) thanh lap cua vat*.