Perhaps you should try some spelling variations:
trinh doi » trinh do, trinh hoi, tinh doi
va trinh » van trinh, va tinh, lap trinh
sach ty » sach tu, sach thu, xach tay
doi cua » dai cua, hoi cua
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
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: tu ((sach ty) or (sach y)) sang ((ma hoi) OR (mai hoi)). hieu ve cac xuc va trinh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) sang ((ma hoi) OR (mai hoi)). hieu ve cac xuc va trinh doi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach y)) sang ((ma hoi) OR (mai hoi)). hieu ve cac xuc va trinh doi cua te*".