Perhaps you should try some spelling variations:
thong duong » tuong duong, thong dung, thong huong
hoan chinh » hanh chinh, hoa hinh
hoc chinh » hoc sinh, hoc kinh
hoa chinh » hoa hinh, hoa thinh, chon chinh
canh sinh » canh tinh, canh binh, tinh sinh
vat thong » va thong, vat trong, mat thong
duong dan » duong dang, huong dan, duong van
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((hoc chinh) OR (hoan chinh))) or (hoa chinh)) sach - canh sinh vat thong duong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc chinh) OR (hoan chinh))) OR (hoa chinh)) sach - canh sinh vat thong duong dan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((hoc chinh) OR (hoan chinh))) or (hoa chinh)) sach - canh sinh vat thong duong dan phan cac".
• Adding a wildcard symbol may retrieve word variants: ((((hoc chinh) OR (hoan chinh))) or (hoa chinh)) sach - canh sinh vat thong duong dan phan cac*.