Perhaps you should try some spelling variations:
cua viet » ca viet, cua vat, cua dieu
vu lanh » vu anh, vu manh, tu lanh
va danh » va dinh, va dan, va hanh
lang xa » lang ha, dang xay, lang van
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
danh vi » hanh vi, dinh vi, danh di
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu lanh dao ((lang xa) or (sang ma)) hoi. hieu ve cam luc va danh vi ((cua viet) OR (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu lanh dao ((lang xa) OR (sang ma)) hoi. hieu ve cam luc va danh vi ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu lanh dao ((lang xa) or (sang ma)) hoi. hieu ve cam luc va danh vi ((cua viet) OR (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: vu lanh dao ((lang xa) or (sang ma)) hoi. hieu ve cam luc va danh vi ((cua viet) OR (hoa viet))*.