Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
va trinh » van trinh, va tinh, lap trinh
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
coc tuc » coc luc, hoc thuc, doc thuc
vat cua » mat cua, bat cua, dat cua
sac ky » cac ky, sai ky
va coc » va cuoc, va cac, va hoc
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sac ky) or (sach y)) lang xa hoi. hieu va coc tuc va trinh vat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (sach y)) lang xa hoi. hieu va coc tuc va trinh vat cua te.
• Adding a wildcard symbol may retrieve word variants: su ((sac ky) or (sach y)) lang xa hoi. hieu va coc tuc va trinh vat cua te*.