Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
cau tren » cu tren, dau tren, ca tren
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
y lang » o lang, _ lang, tay lang
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)) y lang xa hoi. lieu va cham cuu va hanh va ((cau tren) or (dat tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y lang xa hoi. lieu va cham cuu va hanh va ((cau tren) OR (dat tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) y lang xa hoi. lieu va cham cuu va hanh va ((cau tren) or (dat tren))".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuat sach)) y lang xa hoi. lieu va cham cuu va hanh va ((cau tren) or (dat tren))*.