Perhaps you should try some spelling variations:
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
cac tuc » cac toc, cac tu, cac nuoc
cac tac » cac toc, cac bac, cac dac
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi 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: su sach o lang xa hoi. lieu va ((cac tuc) or (cac tac)) va hanh vi ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach o lang xa hoi. lieu va ((cac tuc) OR (cac tac)) va hanh vi ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach o lang xa hoi. lieu va ((cac tuc) or (cac tac)) va hanh vi ((cuu tre) or (cua te))*.