Perhaps you should try some spelling variations:
thanh mat » thanh dat, thanh mau, thanh mot
van thanh » ban thanh, van tuan
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
ve pham » v pham, ve phan, ve phat
duc van » duc va, duc tan, duc manh
mat cua » ma cua, manh cua, mang cua
ma hoi » mai hoi, xa hoi, ma hoa
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) or (thu hoach)) ky nang ma hoi. hieu ((ve pham) OR (vi pham)) duc van thanh mat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky nang ma hoi. hieu ((ve pham) OR (vi pham)) duc van thanh mat cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu hoach)) ky nang ma hoi. hieu ((ve pham) OR (vi pham)) duc van thanh mat cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky nang ma hoi. hieu ((ve pham) OR (vi pham)) duc van thanh mat cua te*.