Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hang vi » hang va, hanh vi, hang di
thuc va » thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
tang xa » trang xa, tang ma, tang ha
ve chat » va chat, van chat
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: su sach ty ((tang xa) OR (lang xa)) hoi. hieu ve chat ((thuc vat) or (thuc va)) hang vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((tang xa) OR (lang xa)) hoi. hieu ve chat ((thuc vat) OR (thuc va)) hang vi cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((tang xa) OR (lang xa)) hoi. hieu ve chat ((thuc vat) or (thuc va)) hang vi cua viet*".