Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
han thai » han tai, ban thai, van thai
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
thai su » thai xu, tai su, thap su
te cac » tu cac, ve cac, te cao
tu san » thu san, tu ban, tu can
va han » va phan, van han, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) or (tu san)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va han thai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (tu san)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va han thai su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) or (tu san)) ky nang xa hoi. ((hieu va) OR (hieu qua)) cham duc va han thai su triet*".