Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tinh sai » trinh sai, tinh hai, tinh bai
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
tu sach » su sach, te sach, tu cach
sai cua » dai cua, hai cua, lai cua
va tinh » may tinh
cham lo » cham o, cam lo, cham soc
cua tuc » cua duc, cua tu, cua thuoc
lang ha » long ha
lang xa » dang xay, lang van
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ty ((lang xa) or (lang ha)) hoi. hieu van cham lo va tinh sai cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty ((lang xa) OR (lang ha)) hoi. hieu van cham lo va tinh sai cua tuc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ty ((lang xa) or (lang ha)) hoi. hieu van cham lo va tinh sai cua tuc*.