Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cham loc » cham soc, chon loc, cham o
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hang » van hang, va nang, va lang
loc va » hoc va, luc va
va ca » va cao, va cai, va cau

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 ty nang xa hoi. hieu ve cham loc va hang ((va ca) OR (va cac)) viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. hieu ve cham loc va hang ((va ca) OR (va cac)) viet".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. hieu ve cham loc va hang ((va ca) OR (va cac)) viet*.