Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
dau tren » dau tien, dau tieng, dau trong
cham cuu » cap cuu, chat cua
dat tren » dat trong, dua tren
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cuu va » cuu van, cuu ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuat sach)) _ lang xa hoi. lieu va cham cuu va hanh va ((dau tren) or (dat tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) _ lang xa hoi. lieu va cham cuu va hanh va ((dau tren) OR (dat tren)).
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) _ lang xa hoi. lieu va cham cuu va hanh va ((dau tren) or (dat tren))*.