Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh mau » hanh mau, thanh san, thanh hai
tu sach » thu sach, su sach, te sach
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc van » duc va, duc tan, duc manh
mau cua » ma cua, cau cua, bau cua
cua tu » cua tuc, cua su, cua cu

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 xa) OR (nang x)) hoi. hieu ve pham duc van thanh mau cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky ((nang xa) OR (nang x)) hoi. hieu ve pham duc van thanh mau cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu hoach)) ky ((nang xa) OR (nang x)) hoi. hieu ve pham duc van thanh mau cua tu".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky ((nang xa) OR (nang x)) hoi. hieu ve pham duc van thanh mau cua tu*.