Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va lanh » va lang, va danh, va hanh
dao cua » day cua, dan cua, do cua
te sac » te sach, te san
te cac » tu cac, ve cac, te cao
x hoi » xa hoi, o hoi, x ho
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te cac)) ky nang x hoi. hieu va am thuc va lanh ((dao cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te cac)) ky nang x hoi. hieu va am thuc va lanh ((dao cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te cac)) ky nang x hoi. hieu va am thuc va lanh ((dao cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te cac)) ky nang x hoi. hieu va am thuc va lanh ((dao cua) OR (dai cua)) tre*.