Perhaps you should try some spelling variations:
thien van » thi van
lang van » dang van, tang van, hoang van
cam thuc » am thuc, nam thuc, cam thu
cau tren » cu tren, dau tren, ca tren
dang xay » dang van, van xay
van cam » van nam, van lam, van cau
sac ky » cac ky, sai ky
dan va » doan va, dan ca, han va
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 ((dang xay) or (lang van)) hoi. thien van cam thuc vat ((dan va) OR (ban va)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((dang xay) OR (lang van)) hoi. thien van cam thuc vat ((dan va) OR (ban va)) cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((dang xay) or (lang van)) hoi. thien van cam thuc vat ((dan va) OR (ban va)) cau tren*".