Perhaps you should try some spelling variations:
lam thue » nam thue, luat thue, lam thuoc
thai cua » than cua, tri cua, dai cua
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam thu » nam thu, cac thu, ca thu
va tang » va trang, van tang, ha tang
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. hieu va ((cam thu) or (lam thue)) va tang ((thai cua) OR (tai cuc)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu va ((cam thu) OR (lam thue)) va tang ((thai cua) OR (tai cuc)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu va ((cam thu) or (lam thue)) va tang ((thai cua) OR (tai cuc)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu va ((cam thu) or (lam thue)) va tang ((thai cua) OR (tai cuc)) te*.