Perhaps you should try some spelling variations:
xa thanh » va thanh, ha thanh, ta thanh
xa khanh » van khanh, dat khanh, hoa khanh
te sach » toc sach
nam tuc » nam thuc, nam truc, nam tu
van cuu » van cau, van chu, van cu
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi
va nam » van nam, ha nam, va nay

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