Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, nam duoc
va danh » va dinh, va dan, va hanh
danh du » danh dau, danh tu, dinh du
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, va sac, vu cac
vu san » va san, vu ban
du cua » duy cua, dau cua, dum cua

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

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