Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
cua viet » ca viet, hoa viet, cua vat
nay lang » nam lang, tay lang, nhan lang
va trinh » van trinh, va tinh, lap trinh
ve cham » va cham, ve chat, vu cham
vat cua » mat cua, bat cua, dat cua
su sach » vu sach
lang xa » lang ha, dang xay, lang van
so sach » so sanh, bo sach, co sach
xuc va » duc va, tuc va, luc va
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) nay lang xa hoi. hieu ((ve cam) or (ve cham)) xuc va trinh vat cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) nay lang xa hoi. hieu ((ve cam) OR (ve cham)) xuc va trinh vat cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) nay lang xa hoi. hieu ((ve cam) or (ve cham)) xuc va trinh vat cua viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) nay lang xa hoi. hieu ((ve cam) or (ve cham)) xuc va trinh vat cua viet*.