Perhaps you should try some spelling variations:
khanh vai » khanh van, hanh vi, hanh va
xa khanh » xa thanh, van khanh, dat khanh
nam truc » nam truoc, nam thuc, nam trung
te sach » toc sach
sach ky » sac ky, sach y, sach ty
vai cuu » vai cua
nam tuc » nam thuc, nam tu, nam thuoc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, mang may
cuu tre » cua tre, cau tren, cau treo

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 ((nang ma) or (nang cao)) hoi. hieu va ((nam tuc) OR (nam truc)) xa khanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (nang cao)) hoi. hieu va ((nam tuc) OR (nam truc)) xa khanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang ma) or (nang cao)) hoi. hieu va ((nam tuc) OR (nam truc)) xa khanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang ma) or (nang cao)) hoi. hieu va ((nam tuc) OR (nam truc)) xa khanh vai cuu tre*.