Perhaps you should try some spelling variations:
thien van » thi van
dang hanh » dang thanh, ban hanh, dang van
thuc dang » thuoc dang, thuc dan, thuc dung
dua tren » dung tren
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
van am » van nam, van lam, van dam
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: te sach y ((nang ma) or (sang ma)) hoi. thien van am thuc dang hanh doi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (sang ma)) hoi. thien van am thuc dang hanh doi ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang ma) or (sang ma)) hoi. thien van am thuc dang hanh doi ((dua tren) or (cua te))*.