Perhaps you should try some spelling variations:
vat trinh » va trinh, van trinh, viet trinh
dang xay » dang van, van xay
trinh do » trinh ky
lang xa » lang ha, lang van
hieu ve » hieu va, hieu van
te lai » te tai, te bai
lai ky » sai ky, dai ky
do hoa » dong hoa
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te lai ky ((lang xa) or (dang xay)) hoi. ((hieu ve) or (lieu va)) am thuc vat trinh do hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te lai ky ((lang xa) OR (dang xay)) hoi. ((hieu ve) OR (lieu va)) am thuc vat trinh do hoa viet.
• Adding a wildcard symbol may retrieve word variants: te lai ky ((lang xa) or (dang xay)) hoi. ((hieu ve) or (lieu va)) am thuc vat trinh do hoa viet*.