Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
truong va » truong dai, truong cao, truong dao
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ve cac » va cac, vien cac
vi cua » vai cua, di cua
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 (thuat sach)) ky ((mang may) or (sang ma)) hoi. hieu ve cac truong va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky ((mang may) OR (sang ma)) hoi. hieu ve cac truong va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky ((mang may) or (sang ma)) hoi. hieu ve cac truong va hanh vi cua te*.