Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chat vuc » chat xuc, chat va, chat huu
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
cua viet » ca viet, hoa viet, cua dieu
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
vuc van » duc van, luc van, thuc van

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 (su sach)) ty nang x ho. hieu ve chat vuc van hanh lai ((cua viet) OR (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ty nang x ho. hieu ve chat vuc van hanh lai ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (su sach)) ty nang x ho. hieu ve chat vuc van hanh lai ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ty nang x ho. hieu ve chat vuc van hanh lai ((cua viet) OR (cua vat))*.