Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
cau duc » cao duc, cau luc, chu duc
va hanh » van hanh, va thanh, va danh
doi cua » hoi cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac
di cua » de cua, do cua, da cua
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu ve cau duc va hanh ((di cua) or (((doi cua) OR (dai cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. hieu ve cau duc va hanh ((di cua) OR (((doi cua) OR (dai cua)))) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x hoi. hieu ve cau duc va hanh ((di cua) or (((doi cua) OR (dai cua)))) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. hieu ve cau duc va hanh ((di cua) or (((doi cua) OR (dai cua)))) tre*.