Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
te sach » toc sach
sach ky » sac ky, sach y, sach ty
duc van » duc va, duc tan, duc manh
doi cua » dai cua, hoi cua
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, de cua, do cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ma hoi. hieu ((ve cam) OR (va cam)) duc van thanh ((di cua) or (doi cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ma hoi. hieu ((ve cam) OR (va cam)) duc van thanh ((di cua) OR (doi cua)) vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang ma hoi. hieu ((ve cam) OR (va cam)) duc van thanh ((di cua) or (doi cua)) vat*".