Perhaps you should try some spelling variations:
xa khanh » xa thanh, van khanh, dat khanh
nam thuc » nam thuoc, am thuc, nam thu
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
cam tuc » cam xuc, cam tu, dam thuc
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
ve cau » ke cau, ve cac, le cau
va cau » van cau, va cac, va dau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang x hoi. hieu va ((cam tuc) OR (nam thuc)) xa khanh ((ve cau) or (va cau)) theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu va ((cam tuc) OR (nam thuc)) xa khanh ((ve cau) OR (va cau)) theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu va ((cam tuc) OR (nam thuc)) xa khanh ((ve cau) or (va cau)) theo".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu va ((cam tuc) OR (nam thuc)) xa khanh ((ve cau) or (va cau)) theo*.