Perhaps you should try some spelling variations:
cua tren » dua tren, ca tren, cua tre
thanh ve » hanh ve, thanh va, thanh vien
van chat » cao chat
van cham » van tham, va cham, van pham
sach ty » sach y, sach tu, sach thu
hoc gia » hoc giao, hoc giai, toc gia
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
ve cua » le cua, de cua, te 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 ((lang xa) or (nang ma)) hoi. thi ((van cham) OR (van chat)) hoc gia thanh ve cua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((lang xa) OR (nang ma)) hoi. thi ((van cham) OR (van chat)) hoc gia thanh ve cua tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((lang xa) or (nang ma)) hoi. thi ((van cham) OR (van chat)) hoc gia thanh ve cua tren*".