Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
ca tren » cau tren, cu tren, la tren
nang xa » nang x, lang xa, nang ma
ve cam » ve cac, va cam, ve cai
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
dan di » danh di, dan da, dan de
di ca » di cau, di cua, doi ca

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) or (thu sach)) ky nang xa hoi. hieu ((ve cam) or (ve cham)) tuc va dan di ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cham)) tuc va dan di ca tren.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang xa hoi. hieu ((ve cam) or (ve cham)) tuc va dan di ca tren*.