Perhaps you should try some spelling variations:
hoa thuc » hoa thuo, khoa thuoc, choi thuc
vu sach » su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va danh » va dinh, va dan, va hanh
ha thuc » va thuc, ha thuy, ha thu
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu bach)) ky nang xa hoi. hieu va cam tuc va danh ((hoa thuc) OR (ha thuc)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky nang xa hoi. hieu va cam tuc va danh ((hoa thuc) OR (ha thuc)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vu bach)) ky nang xa hoi. hieu va cam tuc va danh ((hoa thuc) OR (ha thuc)) te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ky nang xa hoi. hieu va cam tuc va danh ((hoa thuc) OR (ha thuc)) te*.