Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh muc » danh tu
danh mat » danh bat, dang mat, anh mau
cham tuc » nham thuc, pham thuc, tham thuc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
tuc va » thuc va, truc va, tuc xa
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (hoc sinh)) ky nang xa hoi. hieu va cham tuc va ((danh mat) or (danh muc)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sinh)) ky nang xa hoi. hieu va cham tuc va ((danh mat) OR (danh muc)) cua tu.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sinh)) ky nang xa hoi. hieu va cham tuc va ((danh mat) or (danh muc)) cua tu*.