Perhaps you should try some spelling variations:
nang doc » nang luc
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach ty, sach kem
nang co » nang cao, nang noi, nang hoc
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
vi luu » vi lua
tru » truc

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach y)) ((nang co) OR (nang doc)) hoi. hieu va cac xuc van hanh vi luu tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) ((nang co) OR (nang doc)) hoi. hieu va cac xuc van hanh vi luu tru.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) ((nang co) OR (nang doc)) hoi. hieu va cac xuc van hanh vi luu tru".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach y)) ((nang co) OR (nang doc)) hoi. hieu va cac xuc van hanh vi luu tru*.