Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
thanh lai » thanh hai, thanh lap, thanh loi
cau theo » cau thi, cau tao
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
ve pham » vi pham, v pham, ve phan
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa

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) or (toc sach)) ty nang ma hoi. hieu ve pham duc va thanh lai ((dung tren) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty nang ma hoi. hieu ve pham duc va thanh lai ((dung tren) OR (cau theo)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty nang ma hoi. hieu ve pham duc va thanh lai ((dung tren) or (cau theo))*.