Perhaps you should try some spelling variations:
sach thieue » sach thue
pham thuc » phap thuc, pham chuc, nham thuc
danh sai » dung sai, danh bat, danh dau
nang xa » nang x, lang xa, nang ma
hieu vi » hieu voi, hieu va, hieu ve
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
sai cua » dai cua, hai cua, lai cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach thieu) or (sach thieue)) nang xa hoi. hieu vi pham thuc va danh sai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach thieu) OR (sach thieue)) nang xa hoi. hieu vi pham thuc va danh sai cua te.
• Adding a wildcard symbol may retrieve word variants: so ((sach thieu) or (sach thieue)) nang xa hoi. hieu vi pham thuc va danh sai cua te*.