Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich
nam duc » nam duoc, pham duc, nam thuc
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang
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) or (toc sach)) tu lang xa hoi. thien van nam duc va ((hang di) OR (hang vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu lang xa hoi. thien van nam duc va ((hang di) OR (hang vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) tu lang xa hoi. thien van nam duc va ((hang di) OR (hang vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) tu lang xa hoi. thien van nam duc va ((hang di) OR (hang vi)) cua te*.