Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
nganh xay » nganh mac, nganh y, nganh ma
nang xay » dang xay, nang xuan, van xay
va thanh » gia thanh, ban thanh, va tinh
chat xuc » chat huu, cam xuc, chao xu
hieu ve » hieu va, hieu van
van huy » van duy, van hung
ve chat » va chat, van chat
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
huy tre » huy tri, luy tre, huy tran
xuc va » duc va, tuc va, luc va

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 ky ((((nang xay) OR (nang cao))) or (nganh xay)) hoi. hieu ve chat xuc va thanh van huy tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((((nang xay) OR (nang cao))) OR (nganh xay)) hoi. hieu ve chat xuc va thanh van huy tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((((nang xay) OR (nang cao))) or (nganh xay)) hoi. hieu ve chat xuc va thanh van huy tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((((nang xay) OR (nang cao))) or (nganh xay)) hoi. hieu ve chat xuc va thanh van huy tre*.