Perhaps you should try some spelling variations:
cau phuc » cau truc, chau phu, huu phuc
hieu kem » hieu ky, hieu ve
vu hanh » vu khanh, vu thanh, du hanh
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
hanh ky » hanh kem
hieu ke » chieu ke, hieu ky, hieu ve
lang xa » dang xay, lang van
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di 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 hanh ky ((lang xa) OR (lang ha)) hoi. ((hieu ke) or (hieu kem)) cau phuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu hanh ky ((lang xa) OR (lang ha)) hoi. ((hieu ke) OR (hieu kem)) cau phuc va hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu hanh ky ((lang xa) OR (lang ha)) hoi. ((hieu ke) or (hieu kem)) cau phuc va hanh vi cua tre*".