Perhaps you should try some spelling variations:
toan hanh » toan thanh, toan anh, tran hanh
thien van » thi van
duc toan » duc tan, duc ton, duc hoan
lang van » dang van, tang van, hoang van
cua tre » cua triet, dua tren, cua thep
hanh di » hanh vi, hanh de, hang di
cuu tre » cau tren, cau treo
cac duc » cac du, cao duc, cac dac
van cac » van hac, van cau, van bac
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
cua te » cua tu
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky lang van hoi. thien van cac duc toan hanh di ((((cua tre) OR (cua te))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang van hoi. thien van cac duc toan hanh di ((((cua tre) OR (cua te))) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang van hoi. thien van cac duc toan hanh di ((((cua tre) OR (cua te))) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang van hoi. thien van cac duc toan hanh di ((((cua tre) OR (cua te))) or (cuu tre))*.