Perhaps you should try some spelling variations:
van chat » cao chat
thu sach » thuat sach, thuoc sach, thu hoach
trung va » truong va, trang va, trung ha
tu sach » su sach, te sach, tu cach
xanh di » danh di, vanh dai, xanh tai
va xanh » va danh, va hanh, va anh
van bac » van ban, van bao, van hac
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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 sach)) ky nang ma hoi. hieu ((van bac) or (van chat)) trung va xanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang ma hoi. hieu ((van bac) OR (van chat)) trung va xanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang ma hoi. hieu ((van bac) or (van chat)) trung va xanh di cua tre*.