Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
thu sach » tu sach, thuat sach, thuoc sach
duc phan » dung phan, duc thang, duc phung
ve triet » va trien, su triet
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
lap ve » dap ve, lap va, tap ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky lang xa hoi. ((hieu va) or (lieu va)) cam ((duc phan) or (duc tan)) thanh lap ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky lang xa hoi. ((hieu va) OR (lieu va)) cam ((duc phan) OR (duc tan)) thanh lap ve triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky lang xa hoi. ((hieu va) or (lieu va)) cam ((duc phan) or (duc tan)) thanh lap ve triet*.