Perhaps you should try some spelling variations:
ban benh » san benh, ba benh, ban banh
thu sac » thu sach, thu san, thu dac
thu xac » thau xay
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sac) OR (thu xac)) ky nang xa hoi. hieu va cam xuc ((ban benh) or (tai benh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu xac)) ky nang xa hoi. hieu va cam xuc ((ban benh) OR (tai benh)) di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) OR (thu xac)) ky nang xa hoi. hieu va cam xuc ((ban benh) or (tai benh)) di cua tre*".