Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
nang doc » nang luc
chat xuc » chat huu, cam xuc, chao xu
va tinh » may tinh
va chat » van chat, va phat, cao chat
sach ty » sach y, sach tu, sach thu
nang co » nang cao, nang noi, nang hoc
luu tre » luu tru, cuu tre, luy tre
vi luu » vi lua

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 ty ((nang co) or (nang doc)) hoi. lieu va chat xuc ((van hanh) or (va tinh)) vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang co) OR (nang doc)) hoi. lieu va chat xuc ((van hanh) OR (va tinh)) vi luu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang co) or (nang doc)) hoi. lieu va chat xuc ((van hanh) or (va tinh)) vi luu tre*.