Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
cau treo » cau theo, cau tren, cau triet
dua tren » dung tren
va thanh » gia thanh, ban thanh, va tinh
ve pham » vi pham, v pham, ve phan
te sach » toc sach
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
hieu ve » hieu va, hieu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((nang ma) OR (sang ma)) hoi. hieu ve pham duc va thanh lai ((dua tren) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (sang ma)) hoi. hieu ve pham duc va thanh lai ((dua tren) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang ma) OR (sang ma)) hoi. hieu ve pham duc va thanh lai ((dua tren) or (cau treo))".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang ma) OR (sang ma)) hoi. hieu ve pham duc va thanh lai ((dua tren) or (cau treo))*.